Exam 1: Lecture 4-11 Flashcards
UE Anatomy (210 cards)
1
Q
Where does the Teres Major originate and insert? Action? Blood Supply? Innervation?
A
Origin: Lower lateral border of scapula
Insertion: Medial lip of intertubercular groove
Action: Internal rotation, extension, adduction (same as lats)
Blood Supply: subscapular artery, scapular circumflex artery
Innervation: lower subscapular n.
2
Q
Where does the serratus anterior originate and insert? Action? Blood Supply? Innervation?
A
Origin: Lateral region of rib 1-8
Insertion: Medial border of scapula
Action: Scapular protraction and upward rotation
Blood supply: Lateral thoracic artery + superior thoracic artery
Innervation: Long thoracic n.
3
Q
T or F? The pec major forms the anterior axillary fold?
A
True
4
Q
Where does the pec major originate and insert? Action? Blood Supply? Innervation?
A
Origin (2 of them):
- Medial 1/2 of clavicle
- Sternum, costal cartilage 1-7
Insertion: lateral lip of intertubercular groove
Action: Adduction, internal rotation, horizontal adduction, flex extended arm, extend flexed arm
Blood supply: Pectoral branch of thoracoacromial trunk
Innervation: Lateral and medial pectoral nerves
5
Q
The clavicular portion of the pec major performs what action?
A
Flex extended arm
6
Q
The sternal portion of the pec major performs what action?
A
Extend flexed arm
7
Q
Which muscles attach to the bicipital groove?
A
Pec major, latissimus dorsi, teres major
8
Q
Where does the pec minor originate and insert? Action? Blood Supply? Innervation?
A
Origin: Anterior ribs 3-5
Insertion: Coracoid process
Action: Downward rotation, anterior tilt, depression of scapula, elevates ribcage for respiration
Blood Supply: Pectoral branch of thoracoacromial trunk
Innervation: Medial pectoral n
9
Q
Rounded back posture occurs when which muscle is tight?
A
Pec minor
10
Q
Where does the cephalic vein go?
A
Between the deltoid and pec major and drains into the axillary vein
11
Q
Where does the basilic vein go?
A
Joins brachial vein and drains into the axillary vein
12
Q
Where does the deltoid originate and insert?
A
Origin: Anterior portion of lateral 1/3 of clavicle, acromion, inferior/posterior scapular spine
Insertion: Deltoid tuberosity
13
Q
What is the blood supply and innervation of the deltoid?
A
Blood Supply: Anterior and posterior humeral circumflex arteries, deltoid branch of thoracoacromial trunk
Innervation: Axillary n.
14
Q
Which action does the anterior, middle, and posterior portion of the deltoid perform?
A
Anterior: Horizontal adduction, flexion, IR
Middle: abduction
Posterior: Horizontal abduction, extension, ER
15
Q
Which structures sit in the radial groove (spiral groove) of humerus?
A
Radial nerve and deep brachial artery
16
Q
T or F? The triceps lateral head and medial head attach to the radial groove
A
True
17
Q
What is the olecranon process?
A
The tip of the elbow (part of the ulna)
18
Q
T or F? The olecranon makes up the posterior border of the trochlear notch
A
True
19
Q
Where is the coronoid process located?
A
Inferior (distal) border of trochlear notch
20
Q
Where does the brachialis insert?
A
tuberosity of ulna
21
Q
Where does the supinator originate?
A
Supinator crest
22
Q
Describe the head of the radius?
A
- Horizontal disc shape
- Concave superior (articulates with capitulum)
- Articulates with radial notch medially
23
Q
Where does the biceps brachii attach?
A
Radial tuberosity
24
Q
Which muscle attaches to the oblique line of the radius?
A
Flexor digitorum superficialis
25
What are the 3 joints/articulations of the elbow?
Humero-radial: radial head articulates with capitulum of humerus
Humero-ulnar: trochlear notch of ulna articulates with trochlea of humerus
Proximal radioulnar joint: radial head articulates with radial notch of ulna
26
What is the primary function of the annular ligament?
Prevent dislocation of radial head
27
Describe the lateral collateral ligament
- Runs from lateral epicondyle to annular ligament of radius
- Prevents varus (outward) motion
28
Describe the medial collateral ligament
Has 3 parts (triangular shaped)
- Anterior part: Medial epicondyle to coronoid process of ulna (strongest)
- Posterior part: Medial epicondyle to olecranon (weakest)
Transverse part: Coronoid process to olecranon
Prevents valgus (inward) motion
29
What is cubitus valgus?
when the arm extends past 180 degrees
30
What is carrying angle?
5-15 degrees of cubitus valgus (larger in females)
31
What does the anterior compartment of the upper arm contain?
Biceps, brachialis, coracobrachialis
32
Which artery supplies blood to the anterior compartment?
Brachial artery
33
Where does the biceps brachii originate and insert? Action? Blood supply? Innervation?
Origin
- Short head: Coracoid process of the scapula
- Long head: Supraglenoid tubercle
Insertion: Radial tuberosity
Action: Elbow flexion, supination, shoulder flexion (long head)
Blood Supply: Brachial artery
Innervation: Musculocutaneous n.
34
Where does the brachialis originate and insert? Action? Blood supply? Innervation?
Origin: Anterior surface of humerus
Insertion: Ulna tuberosity
Action: Elbow flexion
Blood Supply: Brachial artery
Innervation: Musculocutaneous n.
35
T or F? Biceps tendon rupture is the most common tendon rupture in the UE
True
36
Where is a biceps tendon rupture most likely to occur?
Proximal long head of biceps
37
Where does the coracobrachialis originate and insert? Action? Blood supply? Innervation?
Origin: Coracoid process of scapula
Insertion: Mid humerus
Action: Shoulder flexion, adduction
Blood Supply: Brachial artery
Innervation: Musculocutaneous n.
38
Which artery supplies the posterior compartment of the arm?
Deep brachial artery (travels with radial n.)
39
How many sensory branches come off the radial nerve?
3
40
Name the sensory branches that come off the radial nerve
- Inferior lateral cutaneous n. (to the arm)
- Posterior cutaneous n. (to the arm)
- Posterior cutaneous n. (to the forearm)
41
Where do the triceps originate and insert? Action? Blood supply? Innervation?
Origin:
- Long head: Infraglenoid tubercle of scapula
- Lateral head: Posterior surface of humerus (superior to radial groove)
Medial head: Posterior surface of humerus (inferior to radial groove)
Insertion: Olecranon process
Action: Shoulder extension, elbow extension
Blood Supply: Deep brachial artery
Innervation: Radial n.
42
What are the 3 articulations of the elbow complex?
- Humero-radial joint
- Humero-ulnar joint
- Proximal radioulnar joint
43
Which structures attach to the oblique line on the distal radius?
Supinator and Flexor Digitorum Superficialis
44
Which motions does the anterior compartment perform?
Wrist flexion, forearm pronation, digit flexion
45
Which motions does the posterior compartment perform?
Wrist extension, forearm supination
46
Which bone moves during pronation and supination of the forearm?
Radius
(Ulna remains stationary)
47
What is the primary function of the interosseus membrane?
Connects the radius and ulna and helps with force transmission (Force runs from radius to ulna)
48
Where do the anterior compartment muscles of the forearm originate?
Medial Epicondyle (except for the deep layer)
49
T or F? The superficial and intermediate layers of the anterior compartment (forearm) are innervated by the Median n.
True
50
T or F? The deep layer muscles of the anterior compartment (forearm) are innervated by the anterior interosseus nerve
True
51
T or F? The ulnar nerve only innervates 1.5 muscles of the anterior compartment
True
52
Which artery supplies the majority of the superficial muscles of the anterior compartment?
Ulnar artery
53
Which artery supplies the majority of the deep anterior compartment muscles?
Anterior interosseus artery
54
Where does the pronator teres originate and insert? Action? Blood Supply? Innervation?
Origin (2 Heads): Medial Epicondyle, coronoid process of the ulna
Insertion: Lateral surface of the radius
Action: Forearm pronation
Blood Supply: Ulnar and Radial a.
Innervation: Median n.
55
Where does the flexor carpi radialis originate and insert? Action? Blood Supply? Innervation?
Origin: Medial epicondyle
Insertion: Bases of 2nd and 3rd metacarpal bones
Action: Wrist flexion + Radial deviation
Blood Supply: Ulnar a.
Innervation: Median n.
56
Where does the palmaris longus originate and insert? Action? Blood Supply? Innervation?
Origin: Medial epicondyle
Insertion: Palmar aponeurosis, flexor retinaculum of the hand
Action: Wrist flexion
Blood Supply: Ulnar a.
Innervation: Median n.
57
Where does the flexor carpi ulnaris originate and insert? Action? Blood Supply? Innervation?
Origin: Medial epicondyle + Medial olecranon
Insertion: Pisiform, Hook of hamate, Base of 5th metacarpal
Action: Wrist flexion, ulnar deviation
Blood Supply: Ulnar a.
Innervation: Ulnar n.
58
Where does the flexor digitorum superficialis originate and insert? Action? Blood Supply? Innervation?
Origin: Medial epicondyle, oblique line (radius)
Insertion: Base of middle phalanges of the 4 fingers
Action: PIP flexion
Blood Supply: Ulnar a.
Innervation: Median n.
59
Where does the flexor digitorum profundus originate and insert? Action? Blood Supply? Innervation?
Origin: Upper anterior and medial surfaces of ulna, interosseus membrane of the forearm
Insertion: Base of distal phalanges
Action: PIP and DIP flexion
Blood Supply: Anterior interosseus a.
Innervation: ulnar n. and anterior interosseus n.
60
Where does the flexor pollicis longus originate and insert? Action? Blood Supply? Innervation?
Origin: Anterior + Middle surfaces of radius, interosseus membrane of forearm
Insertion: Base of distal phalanx of thumb
Action: Thumb flexion
Blood Supply: Anterior interosseus a.
Innervation: Anterior interosseus n.
61
Where does the pronator quadratus originate and insert? Action? Blood Supply? Innervation?
Origin: Medial, anterior surface of the ulna
Insertion: Lateral, anterior surface of radius
Action: Forearm pronation
Blood Supply: Anterior interosseus a.
Innervation: Anterior interosseus n.
62
Which muscles are in the deep anterior compartment?
Pronator quadratus, Flexor pollicis longus, flexor digitorum profundus
63
Which muscles are in the intermediate anterior compartment?
Flexor digitorum superficialis
64
Which muscles are in the superficial anterior compartment?
Pronator teres, flexor carpi radialis, palmaris longus, flexor carpi ulnaris
65
Which structure runs with the brachial artery?
Median n.
Proximal: runs lateral to artery
Distal: runs medial to artery
66
T or F? The median nerve innervates all flexors except medial half of Flexor Digitorum Profundus and Flexor Carpi Ulnaris
True
67
T or F? The median nerve runs between the two heads of the pronator teres, and deep to the flexor digitorum superficialis
True
68
The anterior interosseus nerve is a branch of ___________, runs deep to flexor digitorum profundus, and terminates at pronator quadratus
Median nerve
69
Does the median nerve run through the carpal tunnel?
Yes
70
which structures run on either side of the brachial artery throughout most of the upper arm?
Ulnar nerve runs medial,
Median nerve runs lateral
71
What path does the ulnar nerve take?
- posterior to medial epicondyle via cubital tunnel in the elbow
- enters anterior compartment through the two heads of flexor carpi ulnaris
- runs superficial to flexor digitorum profundus
- passes into the wrist superficial to flexor retinaculum (guyon’s canal)
72
Which structures pass through the cubital fossa?
brachial artery and median nerve
73
Which structures make up the boundaries of the cubital fossa?
- Line between two humeral epicondyles
- Brachioradialis
- Pronator teres
74
T or F? The interosseous membrane is helpful in dispersing force when weight bearing through the hand because it transfers force from the ulna to the radius.
False, the force disperses from radius to ulna
75
The superficial and intermediate layers of the anterior compartment of the antebrachium is innervated by the
a. Ulnar nerve
b. Radial nerve
c. Median nerve
d. Both a and c
d. Both ulnar and median nerve
76
3. Which nerve goes between the two heads of the pronator teres?
a. Ulnar nerve
b. Median nerve
c. Radial nerve
d. None of the above
b. Median nerve
77
The only muscle in the antebrachium that is fully innervated by the ulnar nerve is the:
a. Pronator teres
b. Flexor carpi radialis
c. Flexor carpi ulnaris
d. Flexor digitorum profundus
c. Flexor carpi ulnaris
78
What structure makes up the lateral border of the cubital fossa?
a. Pronator teres
b. Lateral epicondyle
c. Median nerve
d. Brachioradialis
d. Brachioradialis
79
T or F? The deep branch of the radial nerve provides motor innervation to the posterior compartment of the antebrachium
True
80
Brachioradialis can achieve which of the following motions?
a. Radial deviation
b. Elbow flexion
c. Supination
d. Both a and b
b. Elbow flexion
81
What is not a function of extensor pollicis longus?
a. Extension of thumb
b. Radial deviation
c. Wrist flexion
d. Wrist extension
c. Wrist flexion
82
The basilic vein drains into
a. Median cubital vein
b. Cephalic vein
c. Brachial vein
d. Axillary vein
d. Axillary vein
83
What structure in not contained within the anatomic snuffbox?
a. Scaphoid
b. Radial nerve
c. Radial artery
b. Radial nerve
84
The wall of Guyon’s canal is made up of
a. Hamate
b. Flexor retinaculum
c. Ulnar nerve
d. Pisiform
d. Pisiform
85
The first carpometacarpal joint is a saddle joint, which plane of motion is it not able to move in?
a. Sagittal
b. Frontal
c. Transverse
d. It can move in all of these planes
c. Transverse
86
Where do the posterior compartment muscles of the forearm originate (except for deep layer)?
Lateral epicondyle of humerus
87
What is the primary action of the posterior compartment muscles of the forearm?
Extend the digits and the hand, supinate the forearm
88
All posterior compartment forearm muscles are innervated by which nerve?
Radial nerve or either of its two branches (deep radial or posterior interosseus)
89
T or F? The deep radial nerve pierces through the supinator
True
90
Which nerve innervates the pinky and half of the wring finger (digit 4.5 and 5)?
Ulnar n.
91
What are the two primary arteries of the posterior compartment (forearm)?
Radial a. and Posterior interosseus a.
92
Which muscles are in the posterior compartment of the forearm?
Superficial: Anconeus, Brachioradialis, Extensor Carpi Radialis Longus, Extensor Carpi Radialis Brevis, Extensor Digitorum, Extensor Digiti Minimi, Extensor Carpi Ulnaris
Deep: Supinator, Abductor Pollicis Longus, Extensor Pollicis Brevis, Extensor Pollicis Longus, Extensor Indicis
93
Where does the anconeus originate and insert? Action? Blood Supply? Innervation?
Origin: Lateral epicondyle
Insertion: Lateral olecranon
Action: Terminal elbow extension
Blood Supply: Deep brachial artery
Innervation: Radial n.
94
Where does the brachioradialis originate and insert? Action? Blood Supply? Innervation?
Origin: Lateral supracondylar ridge of humerus
Insertion: Radial styloid process
Action: Elbow flexion
Blood Supply: Radial recurrent artery (via radial artery)
Innervation: Radial nerve
95
Where does the Extensor Carpi Radialis Longus originate and insert? Action? Blood Supply? Innervation?
Origin: Lateral Supracondylar ridge of humerus
Insertion: posterior surface of 2nd metacarpal base
Action: Wrist deviation + Radial deviation
Blood Supply: Radial a.
Innervation: Radial n.
96
Where does the Extensor Carpi Radialis Brevis originate and insert? Action? Blood Supply? Innervation?
Origin: Lateral epicondyle
Insertion: Posterior surface of 3rd metacarpal base
Action: Wrist extension and Radial deviation
Blood Supply: Radial artery
Innervation: Radial nerve (deep branch)
97
Where does the Extensor Digitorum originate and insert? Action? Blood Supply? Innervation?
Origin: Lateral epicondyle
Insertion: Extensor hood (digits II-V)
Action: Wrist, MP, PIP, DIP extension
Blood Supply: Posterior interosseus artery
Innervation: Posterior interosseus nerve
98
Where does the Extensor Digiti Minimi originate and insert? Action? Blood Supply? Innervation?
Origin: Lateral epicondyle
Insertion: Extensor hood (dorsal 5th digit)
Action: Wrist extension, 5th finger extension
Blood Supply: Posterior interosseus artery
Innervation: Posterior interosseus nerve
99
Where does the Extensor Carpi Ulnaris originate and insert? Action? Blood Supply? Innervation?
Origin: Lateral epicondyle
Insertion: 5th Metacarpal
Action: Wrist extension and ulnar deviation
Blood Supply: Posterior interosseus artery
Innervation: Posterior interosseus nerve
100
Where does the supinator originate and insert? Action? Blood Supply? Innervation?
Origin: Lateral epicondyle and proximal lateral surface of ulna (at supinator crest)
Insertion: Lateral proximal radius
Action: Supination
Blood Supply: Radial recurrent artery
Innervation: Radial nerve (deep branch)
101
Where does the Extensor Pollicis Brevis originate and insert? Action? Blood Supply? Innervation?
Origin: Radius and interosseus membrane
Insertion: proximal phalanx (of thumb)
Action: Extension of MP and CMC joint, wrist extension and radial deviation
Blood Supply: Posterior interosseus artery
Innervation: Posterior interosseus nerve
102
Where does the Extensor Pollicis Longus originate and insert? Action? Blood Supply? Innervation?
Origin: Middle 1/3 of posterior surface of ulna, interosseus membrane
Insertion: Distal phalanx of thumb
Action: Extension of thumb at CMC, MP, and IP joints... also does wrist extension and radial deviation
Blood Supply: Posterior interosseus artery
Innervation: Posterior interosseus nerve
103
Where does the Extensor Indicis originate and insert? Action? Blood Supply? Innervation?
Origin: Distal ulna, interosseus membrane
Insertion: Extensor hood of index finger
Action: Extension of index finger, wrist extension
Blood Supply: Posterior interosseus artery
Innervation: Posterior interosseus nerve
104
Which muscles does the radial nerve innervate?
Brachioradialis, extensor carpi radialis longus
105
Which muscles does the deep radial nerve innervate?
Extensor carpi radialis brevis, supinator
106
Which muscles does the the posterior interosseus nerve innervate?
The rest of the posterior compartment muscles (extensors)
107
Tennis elbow is referred to as...
Golfer's elbow is referred to as...
Tennis elbow: also known as "Lateral epicondylitis"
Golfer's elbow: also known as "Medial epicondylitis"
108
The radial nerve provides cutaneous innervation where?
Posterior arm, lateral inferior arm, posterior forearm
109
The axillary nerve provides cutaneous innervation where?
Lateral superior arm
110
T or F? The cephalic vein runs between the groove of the deltoid and pec
True
111
C4 dermatomes coordinate with...
Clavicular region
112
C5 and T2 dermatomes coordinate with...
Lateral and Medial brachium (upper arm)
113
C6 and T1 dermatomes coordinate with...
Lateral and Medial antebrachium (forearm)
114
Median cubital vein and median antebrachial vein are branches of the...
basilic vein
115
List the 8 carpal bones
Scaphoid, Lunate, Triquetrum, Pisiform, Hamate, Capitate, Trapezoid, Trapezium
116
Describe the radiocarpal joint?
- Known as the "wrist" joint
- Performs flexion/extension, radial/ulnar deviation
117
What is the midcarpal joint?
the joint between rows 1 and 2 of the carpal bones (pisiform not involved)
118
What is the triangular fibrocartilage complex (TFCC)?
- Complex located between ulna and carpals
- triangular disc
- dorsal/palmar radioulnar ligaments
- ulnocarpal ligaments
119
What is the function of the TFCC?
Provides cushioning at the medial wrist, holds distal bones together
120
What is the anatomic snuffbox?
- The space between the extensor pollicis brevis and extensor pollicis longus
- Contains the scaphoid (palpate for fx) and radial artery
121
Which ligament forms the roof of carpal tunnel?
Flexor retinaculum
122
Which structures pass through carpal tunnel?
- Median nerve
- Flexor digitorum superficialis tendons (4)
- Flexor digitorum profundus tendons (4)
- Flexor pollicis longus tendon
123
Ulnar nerve and artery pass through which canal?
Guyon's Canal
124
Which structures form the boundaries of Guyon's canal?
Roof: palmar carpal ligament
Floor: flexor retinaculum
Wall: pisiform
125
What are digital sheaths?
Holds the tendons together and provides synovial fluid allowing for mobility
126
T or F? FPL has its own sheath while FDP and FPS share a sheath
True
127
Which retinaculum is thinner? Flexor or extensor?
Extensor retinaculum
128
Which structures pass beneath the extensor retinaculum?
List by sheath
1. Extensor Pollicis Brevis and Abductor Pollicis Longus
2. Extensor Carpi Radialis Longus and Extensor Carpi Radialis Brevis
3. Extensor Pollicis Longus
4. Extensor Digitorum and Extensor Indicis
5. Extensor Digiti Minimi
6. Extensor Carpi Ulnaris
129
What is de quervains syndrome?
When the 1st extensor compartment (Abductor pollicis brevis and extensor pollicis brevis) become inflammed
130
What is an intertendinous connection?
- Connects adjacent fingers
- Active extension of one finger is accompanied by passive movement of another
131
Which finger can go into extension most independently?
index finger
132
Describe the radial collateral ligament
- Runs from the radial styloid process to the scaphoid/trapezium
- Limits ulnar deviation
133
Describe the ulnar collateral ligament
- Part of TFCC
- Runs from Ulnar styloid process to triquetrum and pisiform
- Limits radial deviation
134
List the deep anterior ligaments
- Radial collateral ligament
- Ulnar collateral ligament
- Palmar radioulnar
- Palmar radiocarpal
- Ulnocarpal
- Palmar intercarpal/carpometacarpal
135
What is the palmar aponeurosis?
- Flattened flexor tendons and condensed fascia
- Protects bones, vessels, nerves
136
What is dupuytrens contracture?
fixed flexion of palmar aponeurosis digits IV and V
137
Describe CMC joint 1 (thumb)
- Saddle joint
- Performs flexion, extension, abduction, adduction
138
Which CMC joints are mobile? stable?
Mobile: 1st, 4th, 5th
Stable: 2nd and 3rd
139
MCP joints perform which actions?
Flexion, extension, abduction, adduction
140
What are the primary functions of the palmar plate (ligament)?
Prevent hyperextension of the fingers
141
T or F? The collateral ligaments of the MCP joints are tightened in flexion and slacked in extension
True
142
What is the deep transverse metacarpal ligament?
Connects the heads of the metacarpals
143
The recurrent branch of the median nerve provides innervation to
Thenar muscles (thumb)
144
The digital branch of the median nerve provides innervation to
motor innervation: two lumbricals (radial side)
sensory innervation: digits 1-3 (palmar and dorsal tips)
145
The palmar branch of the median nerve provides innervation to
sensory innervation: proximal palm, central wrist
(also runs superficial to carpal tunnel)
146
The deep branch of the ulnar nerve provides motor innervation to
- Hypothenar muscles
- 2 lumbricals (ulnar side)
- Deep intrinsic muscles
147
The superficial branch of the ulnar nerve provides sensory innervation to
- Palmar digit 5
- half of digit 4
148
The palmar branch of the ulnar nerve provides sensory innervation to
Medial palm
149
The dorsal branch of the ulnar nerve provides sensory innervation to
Medial dorsum of hand and digits 4+5
150
T or F? If someone has a TFCC rupture, they will not be able to press up from a chair or the ground
True
151
Which artery supplies the supinator and brachioradialis?
Radial artery
152
Does the brachioradialis move the wrist?
NO!
153
T or F? the superficial branch of the radial nerve is the only branch to reach the hand
True
154
Which fingers does the radial nerve innervate?
Digits 1,2,3, and half of 4
155
The fingertips of digits 1-3.5 are innervated by which nerve?
Median nerve
156
Which artery supplies the superficial hand muscles on the radial side
Superficial palmar arch artery
157
Which artery supplies the superficial hand muscles on the ulnar side?
Ulnar artery
158
Which artery supplies the deep intrinsic muscles of the hand?
Deep palmar arch artery
159
Which of the following statements about the extensor hood is true?
- Terminal slip of extensor hood drives DIP extension
- Central slip of the extensor hood drives PIP extension
- Extensor hood allows the hand intrinsic muscles to assist finger extension
- All of the above
All of the above
160
What is the primary function of dorsal interossei?
Abduction of digits II-IV
161
What are the 3 muscles of the thenar (thumb) group?
- Abductor pollicis brevis
- Flexor pollicis brevis
- Opponens pollicis
162
Which of the following median nerve branches does not pass under the flexor retinaculum of the wrist?
- Palmar branch
- Recurrent branch
- Digital branch
- None of the above
Palmar branch
163
Which of the following muscles is not innervated by the ulnar nerve?
- Adductor pollicis
- Dorsal interosseus
- Palmar interosseus
- Thenar muscles
Thenar muscles
164
The cutaneous innervation of the 5th finger is provided by the
ulnar nerve
165
Which nerves provide innervation to the posterior compartment of the antebrachium?
Deep radial nerve and posterior interosseus nerve
166
1. What is the action of the muscles in the posterior compartment of the forearm?
a. Forearm supination and wrist flexion
b. Forearm pronation and wrist flexion
c. Forearm supination and wrist extension
d. Forearm pronation and wrist extension
c. Forearm supination and wrist extension
167
T or F? The distal ulna houses the scaphoid facet laterally and the lunate facet medially
False, the distal radius does
168
The anterior interosseous nerve is a branch of the _________ nerve and the anterior interosseous artery is a branch of the __________ artery
a. Median, median
b. Median, ulnar
c. Ulnar, median
d. Ulnar, ulnar
b. Median, Ulnar
169
Which muscle is the pisiform bone embedded in?
a. Flexor carpi radialis
b. Flexor digitorum profundus
c. Flexor digitorum superficialis
d. Flexor carpi ulnaris
d. Flexor carpi ulnaris
170
What nerve runs in the cubital tunnel of the elbow?
a. Ulnar
b. Median
c. Radial
d. Anterior interosseus
a. Ulnar
171
What is NOT included in the contents of the cubital fossa?
a. Tendon of biceps brachii
b. Median nerve
c. Brachial artery
d. Ulnar nerve
d. Ulnar nerve
172
Which of the following muscles is NOT directly innervated by the radial nerve?
a. Extensor carpi radialis brevis
b. Extensor carpi radialis longus
c. Anconeus
d. Brachioradialis
Extensor carpi radialis brevis (innervated by deep radial)
173
What nerve provides cutaneous innervation to the lateral superior arm?
a. Median
b. Musculocutaneous
c. Axillary
d. Radial
Axillary nerve
174
12. What bone does not articulate with the radius?
a. Triquetrum
b. Lunate
c. Scaphoid
d. Ulna
a. triquetrum
175
What bone articulates with MC II?
a. Hamate
b. Capitate
c. Trapezium
d. Trapezoid
Trapezoid
176
Which carpometacarpal (CMC) joints are stable? mobile?
Stable: 2nd and 3rd
Mobile: 1st, 4th, 5th
177
In the distal articulation of the radius and ulna, the radius is ____ while the ulna is _____
Concave, convex
178
Where does the median nerve enter the anterior compartment?
Between the 2 heads of the pronator teres
179
The median cubital vein connects which two veins in the inner elbow?
Cephalic and basilic
180
4. Which of the following ligaments is not included in the triangular fibrocartilage complex?
a. Radial collateral ligaments
b. Ulnar collateral ligaments
c. Ulnocarpal ligaments
d. Dorsal radioulnar ligaments
a. Radial collateral ligaments
181
The radial collateral ligament attaches which structures?
Radial styloid to scaphoid/trapezium
182
What is the function of the palmar plate?
prevent hyperextension
183
Which of the following is not a branch of the median nerve?
a. Recurrent branch (motor to thenar)
b. Deep branch
c. Digital branch (motor to lumbricals, sensory to finger tips 1-3)
d. Palmar branch (superficial to carpal tunnel, sensory to palm/wrist
b. Deep branch
184
The thumb receives blood supply from ______ which is a branch of the ________
Princeps pollicis artery, deep palmar arch
185
The lumbricals perform which actions?
Flex the MPs, extend the IPs
186
The flexor pollicis brevis is innervated by the
median nerve
187
What are the 3 hypothenar muscles?
- Opponens digiti minimi
- Abductor digiti minimi
- Flexor digiti minimi
188
The superficial palmar arch is formed by...
- Ulnar artery
- superficial branch of radial artery
189
The deep palmar arch is formed by...
- Radial artery
- deep branch of ulnar artery
190
T or F? Intrinsic muscles are for power grip and extrinsic muscles are for precision grip
False, intrinsic muscles are for precision grip while extrinsic muscles are for power grip
191
The central slip and lateral bands of the extensor hood go where?
Middle phalanx
192
The terminal slip of the extensor hood goes where?
Distal phalanx
193
True or False? "trigger finger" is a flexion mechanism problem
True
194
List the upper limb myotomes and finger dermatomes
Myotomes (upper limb)
- C5: Elbow flexion
- C6: Wrist extension
- C7: Elbow extension
- C8 Finger flexion
- T1: Finger abduction
Dermatomes:
- C6: Digit 1 and 2
- C7: Digit 2 and 3
- C8: Digit 4 and 5
195
Which carpal bone articulates with MC 1?
Trapezium
196
Which carpal bone articulates with MC2?
Trapezoid
197
Which carpal bone articulates with MC 3?
Capitate
198
Which carpal bone articulates with MC 4/5?
Hamate
199
T or F? The ulnar artery supplies the hypothenar muscles of the hand
True
200
T or F? The superficial muscles on the radial side of the hand are supplied by the superficial palmar arch
True
201
T or F? The deep palmar arch supplies the intrinsic hand muscles
True
202
The radius' head concaves superiorly to articulate with...
Capitulum
203
The proximal end of the ulna articulates with...
Trochlea of humerus
204
The ulnar nerve only innervates which muscles of the anterior compartment?
- Flexor Carpi Ulnaris
- 1/2 of Flexor Digitorum Profundus
205
What is De Quervain’s syndrome?
Also known as “hammer hand” or “hammer wrist”
Injuries to the first extension compartment (APL/EPB)
206
T or F? The roof of the carpal tunnel is flexor retinaculum, the floor is the carpal bones
True
207
Which structures pass through the carpal tunnel?
- flexor digitorum superficialis (4 tendons)
- flexor digitorum profundus (4 tendons)
- flexor pollicis longus (1 tendon)
- Median n.
(10 structures total)
208
Which structures pass through the carpal tunnel?
- flexor digitorum superficialis (4 tendons)
- flexor digitorum profundus (4 tendons)
- flexor pollicis longus (1 tendon)
- Median n.
(10 structures total)
209
T of F? Adductor pollicis is innervated by ulnar nerve
True
210
Which nerve pierces through supinator?
Deep radial nerve
