Upper limb Week 9 Flashcards
(154 cards)
1
Q
When looking at the cross section of the arm, what makes the anterior compartment
A
Biceps brachii
Brachialis
Coracobrachialis
2
Q
When looking at the cross section of the arm, what makes the posterior compartment
A
Triceps brachii
Anconeus
3
Q
What is the origin of biceps brachii
A
Long head - Supraglenoid tubercle of scapula;
Short head - Apex of coracoid process
4
Q
What is the insertion of biceps brachii
A
Radial tuberosity of radius
5
Q
What innervates biceps brachii
A
musculocutaneous nerve
6
Q
What is the action of biceps brachii
A
Flexion of the forearm at the elbow joint
Supinates forearm
Accessory flexor of the arm at shoulder joint
7
Q
What is the origin of brachialis
A
Anterior aspect of humerus
8
Q
What is the insertion of brachialis
A
Ulna tuberosity
9
Q
What innervates brachialis
A
Musculocutaneous nerve
10
Q
What is the action of brachialis
A
Flexor of the forearm at the elbow joint
11
Q
What is the origin of coracobrachialis
A
coracoid process of scapula
12
Q
What is the insertion of coracobrachialis
A
mid-shaft of humerus
13
Q
What innervates coracobrachialis
A
Musculocutaneous nerve
14
Q
What is the action of coracobrachialis
A
Flexor of the arm at the shoulder joint
15
Q
What are the anterior compartment of the upper arm involved in
A
Flexion at the shoulder joint
16
Q
Which branch is the musculocutaneous nerve from
A
Branch of lateral cord of brachial plexus
17
Q
Which muscles does the musculocutaneous nerve pierce through
A
coracobrachialis muscle
18
Q
What does the musculocutaneous nerve innervate
A
Biceps brachii
Brachialis
Coracobrachialis
19
Q
What is the origin of triceps brachii
A
Long head- Infraglenoid tubercle of scapula
Medial head-posterior surface of humerus
lateral head-posterior surface of humerus
20
Q
What is the insertion of triceps brachii
A
Olecranon process of ulna
21
Q
What innervates triceps brachii
A
Radial nerve
22
Q
What is the action of triceps brachii
A
Extension of the forearm at the elbow joint.
Long head - extend and adduct the arm at the
shoulder joint
23
Q
Which branch is the radial nerve from
A
Branch of posterior cord of brachial plexus
24
Q
What does the radial nerve innervate
A
Supplies muscles of back of arm and forearm
25
Which fingers does the medial nerve innervate
thumb, index, middle and 1/2 ring fingers
26
Which fingers does the radial nerve innervate
1/2 ring finger and pinky
27
When does the subclavian artery become an axillary artery
outer border of the first rib
28
What is the axillary artery
A continuation of subclavian artery
29
How many parts and where does the axillary artery divide
Breaks into 3 parts at pectoralis minor
30
When does the axillary artery become a brachial artery
lower border of teres major
31
How many parts and where does the brachial artery divide
breaks into 2 parts (radial and ulnar arteries) below elbow joint
32
Where can the cubital fossa be found
Anterior aspect of elbow joint
33
What are the 3 boundaries of the cubital fossa
Superiorly, Medially, Laterally
34
What makes the superior border of the cubital fossa
an imaginary line connecting the medial and lateral epicondyles
35
What makes the medial border of the cubital fossa
pronator teres & the mass of flexor muscles of the forearm
36
What makes the lateral border of the cubital fossa
brachioradialis ,mass of extensor muscles
37
What are the contents found at the cubital fossa
tendon of the biceps brachii muscle
brachial artery
median nerve
38
What are the superficial muscles of the forearm
Pronator teres
Flexor carpi radialis
Palmaris longus
Flexor carpi ulnaris
(Intermediate layer)
Flexor digitorum superficialis
39
What are the deep muscles of the forearm
Pronator quadratus
Flexor pollicis longus
Flexor digitorum profundus
40
Placing your left hand over your right, with your thumb on your medial epicondyle, what are the muscles from index to pinky
Index - pronator teres
Middle - flexi carpi radialis
Ring - palmaris longus
Pinky - flexi carpi ulnaris
41
Where can the pronator quadratus be found
From ulna head towards median
42
Where can flexor digitorum profundus be found
on top of pronator quadratus and flexor pollicis longus
43
What is the origin of pronator teres
Medial epicondyle of humerus
Coronoid process of ulna
44
What is the insertion of pronator teres
mid-shaft of radius
45
What innervates pronator teres
median nerve
46
What is the action of pronator teres
Pronates and flexes forearm
47
What is the origin of flexor carpi radialis
medial epicondyle of humerus
48
What is the insertion of flexor carpi radialis
Base of metacarpals II and III
49
What innervates flexor carpi radialis
median nerve
50
What is the action flexor carpi radialis
Flexion and abduction of wrist
51
What is the origin of palmaris longus
Medial epicondyle of humerus
52
What is the insertion of palmaris longus
Palmar aponeurosis of hand
53
What innervates palmaris longus
median nerve
54
What is the action of palmaris longus
Flexion of wrist joint
55
What is the origin of flexor carpi ulnaris
medial epicondyle of humerus, olecranon and posterior border of ulna
56
What is the insertion of flexor carpi ulnaris
Pisiform bone, hamate and base of metacarpal
V
57
What innervates flexor carpi ulnaris
ulnar nerve
58
What is the action of flexor carpi ulnaris
Flexion and adduction of wrist
59
What is the origin of flexor digitorum superficialis
Medial epicondyle of humerus
coronoid process of ulna
head of radius
60
What is the insertion of flexor digitorum superficialis
Splits into four tendons, which attach to the palmar surfaces of the middle phalanges of the index, middle, ring, and little fingers
61
What innervates flexor digitorum superficialis
median nerv
62
What is the action of flexor digitorum superficialis
Flexes wrist joint, proximal interphalangeal joints, metacarpophalangeal joints of the index, middle, ring, and little fingers
63
What is the origin of flexor digitorum profundus
Ulna and interosseous membrane
64
What is the insertion of flexor digitorum profundus
Four tendons, which attach to the palmar surfaces of the distal phalanges of the index, middle, ring, and little fingers
65
What innervates flexor digitorum profundus
Lateral half by median nerve
Medial half by ulnar nerve
66
What is the action of flexor digitorum profundus
Flexes wrist joint, distal interphalangeal joints, metacarpophalangeal joints of the index, middle, ring, and little fingers
67
What is the origin of flexor pollicis longus
Anterior surfaces of radius and interosseous
membrane
68
What is the insertion of flexor pollicis longus
base of distal phalanx of thumb
69
What innervates flexor pollicis longus
median nerve
70
What is the action of flexor pollicis longus
Flexes interphalangeal and metacarpo-
phalangeal joint of the thumb
71
What is the origin of pronator quadratus
Distal anterior surface of ulna
72
What is the insertion of pronator quadratus
Distal anterior surface of radius
73
What innervates pronator quadratus
median nerve
74
What is the action of pronator quadratus
pronation
75
What innervates the posterior compartment of the forearm muscles
Radial nerve
76
What is the origin of brachioradialis
supracondylar ridge of humerus
77
What is the insertion of brachioradialis
Distal end of radius
78
What innervates brachioradialis
radial nerve
79
What is the action of brachioradialis
flexor of elbow joint
80
What is the origin of Extensor carpi radialis longus
supracondylar ridge of humerus
81
What is the insertion of Extensor carpi radialis longus
Dorsal surface of base of metacarpal II
82
What is the action of Extensor carpi radialis longus
Extends and abducts the wrist
83
What is the origin of Extensor carpi radialis brevis
Lateral epicondyle of humerus
84
What is the insertion of Extensor carpi radialis brevis
Dorsal surface of base of
metacarpals II and III
85
What is the action of Extensor carpi radialis brevis
Extends and abducts the wrist
86
What is the origin of Extensor digitorum
Lateral epicondyle of humerus
87
What is the insertion of Extensor digitorum
bases of the middle and distal phalanges of the
index, middle, ring, and little fingers
88
What is the action of Extensor digitorum
Extends the index, middle, ring, and little fingers
Can also extend the wrist
89
What is the origin of Extensor digiti minimi
Lateral epicondyle of humerus
90
What is the insertion of Extensor digiti minimi
Dorsal hood of the little finger
91
What is the action of Extensor digiti minimi
Extends the little finger
92
What is the origin of Extensor carpi ulnaris
Lateral epicondyle of humerus and ulna
93
What is the insertion of Extensor carpi ulnaris
base of metacarpal V
94
What is the action of Extensor carpi ulnaris
Extends and adducts the wrist
95
What is the wrist joint
synovial joint
96
Where are the articular surfaces of wrist joint
Distal end of radius & scaphoid, lunate,
triquetral
97
What are the ligaments of the wrist joint
Fibrous capsule with synovial membrane
Dorsal & palmar radio-carpal ligaments
Radial & ulnar collateral ligaments
98
What are the movements of the wrist joint
adduction - abduction
flexion - extension
99
What fingers does the ulnar artery supply
1/2 index to pinky
100
What fingers does the radial artery supply
thumb to 1/2 index
101
How does the Interossei help the lumbricals
Interossei help the lumbricals to extend IP joints and flex MC-P joints
102
What is the interossei involve in adduction
palmar interossei
103
what is the interossei involved in abduction
dorsal interossei
104
What is the origin of supinator
Superficial part-lateral epicondyle of humerus,
ulna
105
What is the insertion of supinator
Lateral surface of radius
106
What is the action of supinator
supination
107
What is the origin of Extensor indicis
ulna
108
What is the insertion of Extensor indicis
Extensor hood of index finger
109
What is the action of Extensor indicis
extends index finger
110
What is the origin of Abductor pollicis
longus
Posterior surfaces of ulna and radius
111
What is the insertion of Abductor pollicis
longus
Lateral side of base of metacarpal I
112
What is the action of Abductor pollicis
longus
Abducts carpometacarpal joint of thumb
113
What is the origin of Extensor pollicis brevis
Posterior surface of radius
114
What is the insertion of Extensor pollicis brevis
base of proximal phalanx of the thumb
115
What is the action of Extensor pollicis brevis
Extends metacarpophalangeal and
carpometacarpal joint of the thumb
116
What is the origin of Extensor pollicis longus
Posterior surface of ulna
117
What is the insertion of Extensor pollicis longus
Dorsal surface of base of distal phalanx of thumb
118
What is the action of Extensor pollicis longus
Extends carpometacarpal and metacarpophalangeal, interphalangeal
joint of the thumb
119
What are the thenar muscles
opponens pollicis, Abductor pollicis
brevis, flexor pollicis brevis
120
What innervates the thenar muscles
median nerve
121
What is the origin of opponens pollicis
Tubercle of trapezium and flexor retinaculum
122
What is the insertion of opponens pollicis
Lateral margin and adjacent palmar surface of
metacarpal I
123
What innervates opponens pollicis
median nerve
124
What is the action of opponens pollicis
medially rotates thumb
125
What is the origin of abductor pollicis brevis
Tubercles of scaphoid and trapezium and
adjacent flexor
126
What is the insertion of abductor pollicis brevis
Proximal phalanx and extensor hood of thumb
127
What innervates abductor pollicis brevis
median nerve
128
What is the action of abductor pollicis brevis
Abducts thumb at metacarpophalangeal joint
129
What is the origin of flexor pollicis brevis
Tubercle of the trapezium and flexor retinaculum
130
What is the insertion of flexor pollicis brevis
Proximal phalanx
of the thumb
131
What is the action of flexor pollicis brevis
flexes the metacarpophalangeal joint of the thumb
132
What innervates flexor pollicis brevis
median nerve
133
what are the hypothenar muscles
Opponens digiti minimi, abductor digiti
minimi, Flexor digiti minimi brevis
134
what innervates the hypothenar muscles
Deep branch of ulnar nerve [C8,T1]
135
What is the origin of Opponens digiti minimi
Hook of hamate and flexor retinaculum
136
What is the insertion of Opponens digiti minimi
Medial aspect of metacarpal V
137
What innervates Opponens digiti minimi
Deep branch of ulnar nerve [C8,T1]
138
What is the action of Opponens digiti minimi
Laterally rotates metacarpal V
139
What is the origin of Abductor digiti minimi
Pisiform
pisohamate ligament
tendon of flexor carpi ulnaris
140
What is the insertion of Abductor digiti minimi
Proximal phalanx of little finger
141
What innervates Abductor digiti minimi
Deep branch of ulnar nerve [C8,T1]
142
What is the action of Abductor digiti minimi
Abducts little finger at metacarpophalangeal joint
143
What is the origin of Flexor digiti minimi brevis
Hook of the hamate and flexor retinaculum
144
What is the insertion of Flexor digiti minimi brevis
Proximal phalanx of little finger
145
What is the action of Flexor digiti minimi brevis
Flexes little finger at metacarpophalangeal joint
146
What innervates flexor digiti minimi brevis
Deep branch of ulnar nerve [C8,T1]
147
What are the extensor muscles innervated by
radial nerve
148
What does radial nerve innervate
Brachioradialis
Extensor muscles
Anconeus
Supinator
Abductor pollicis longus
149
How to differentiate between acromial and sternal end of clavicle
Acromial end is flattened and articulates with acromion process of scapula
Sternal end if enlarged and articulates with manubrium sternum
150
What separates the deep muscles
Deep fascia
151
Is the long head of triceps brachii found superficially or deep
Superficially
152
What does a damage in radial nerve lead to
wrist drop as muscles cannot be extended
153
What is the clinical significance of cubital fossa
Test for deep tendon reflex
Measure BP
Draw blood
154
How many pronators can be found in the anterior aspect
2 (1 superficial, 1 deep)
