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Exam 3- Anatomy > Upper Limb II: The Arm and Forearm > Flashcards

Upper Limb II: The Arm and Forearm Flashcards

1
Q

which bone of the forearm is medial?

A

ulna

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2
Q

which bone of the forearm is lateral?

A

radius

thumb side

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3
Q

humeral region of upper extremity

A

brachium

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4
Q

what are the three joints of the elbow?

A

humeroradial
humeroulnar
proximal radial

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5
Q

name the nerves moving down the ANTERIOR side of the arm and forearm

A

supraclavicular nerve
T2 intercostobrachial nerve
medial brachial cutaneous nerve
lateral cutaneous nerve of forearm

some axillary nerve on deltoid

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6
Q

name the nerves moving down the POSTERIOR side of arm and forearm

A

T2 intercostobrachial nerve
superior lateral cutaneous nerve (via axillary)
posterior cutaneous nerve of arm
posterior cutaneous nerve of forearm

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7
Q

what nerves are from radial nerve

A

posterior ante brachial cutaneous

posterior brachial cutaneous

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8
Q

major veins of the arm and forearm

A

cephalic vein
basilic vein
medial cubital vein (cubital fossa)

these are on anterior side

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9
Q

fascia that surrounds the arm

A

brachial fascia

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10
Q

fascia surrounding the forearm

A

ante brachial fascia

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11
Q

arterial supply of arm

A

axillary artery branches to brachial

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12
Q

significant tributaries of brachial artery

A

profunda brachii (deep brachial)
superior ulnar collateral
inferior ulnar collateral

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13
Q

branches of the profunda brachii

A

posterior descending branch (middle collateral)

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14
Q

muscles of the flexor compartment

A

biceps barachii
brachiallis
coracobrachialis

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15
Q

what nerve innervates the flexors

A

musculocutaneous

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16
Q

what lies beneath the short head of the biceps

A

coracobrachialis

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17
Q

are the flexors anterior or posterior?

A

anterior

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18
Q

proximal attachment of long head of biceps brachii

A

supraglenoid tubercle of scapula

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19
Q

proximal attachment of short head of biceps brachia

A

coracoid process of scapula

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20
Q

distal attachment of biceps brachii

A

radial tuberosity and fascia of forearm

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21
Q

what allows the biceps to attach distally?

A

bicipital aponeurosis

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22
Q

blood supply of biceps brachii

A

brachial artery

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23
Q

innervation of biceps brachii

A

musculocutaneous nerve

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24
Q

proximal attachment of coracobrachialis

A

coracoid process of scapula

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25
distal attachment of coracobrachialis
middle 1/3 of medial humeral surface
26
actions of coracobrachialis
flexes and adducts arm at shoulder joint | resists dislocation of shoulder joint
27
blood supply of coracobrachialis
brachial artery
28
innervation of coracobrachialis
musculocutaneous | may have radial nerve contributions
29
what muscles compose the extensors of the arm?
triceps brachii | anconeus
30
are extensors anterior or posterior?
posterior
31
3 parts of the triceps
long head lateral head medial head
32
what nerve innervates the extensors?
radial nerve
33
proximal attachment of anconeus
lateral epicondyle of humerus
34
distal attachment of anconeus
lateral surface of olecranon | superior part of surface of ulna
35
blood supply of anconeus
deep brachial artery
36
innervation of anconeus
radial nerve
37
proximal attachment of long head of triceps bracii
infraglenoid tubercle
38
proximal attachment of lateral head of triceps bracii
posterior surface of humerus
39
proximal attachment of medial head of triceps bracii
posterior surface of humerus, inferior to radial groove (spiral groove)
40
distal attachment of triceps bracii
proximal olecranon and fascia of forearm
41
actions of triceps bracii
extends forearm at elbow joint resists dislocation of shoulder joint (long head)
42
blood of triceps bracii
deep brachial artery
43
innervation of triceps bracii
radial nerve
44
the activity at the elbow joint involves working (with/against) strong flexing
against triceps are constantly acting as antagonists to forearm flexors
45
what is the cubital fossa?
junction between the arm and forearm
46
superior boundary of cubital fossa
imaginary line between medial and lateral epicondyles of humerus
47
lateral boundary of cubital fossa
brachioradialis
48
medial boundary of cubital fossa
pronator teres
49
roof boundary of cubital fossa
skin, superficial and deep fascia. bicipital aponeurosis
50
floor of cubital fossa
supinator and brachialis
51
name the contents of the cubital fossa
1. median nerve 2. bifurcation of radial and ulnar arteries 3. brachial veins (venae comitantes) 4. tendon of biceps brachia and bicipital aponeurosis 5. radial nerve (deep and superficial)
52
what lies posterior to the cubital region?
elbow region
53
what does the elbow region consist of?
triceps and olecranon process anconeus ulnar nerve runs posterior to medial epicondyle of humerus posterior ulnar recurrent artery
54
proximal attachment of pronator teres
coronoid process of ulna
55
distal attachment of pronator teres
middle of lateral surface of radius
56
actions of pronator teres
pronates and flexes forearm at elbow
57
innervation of pronator teres
median nerve
58
proximal attachment of flexor carpi radialis
medial epicondyle of humerus (common flexor origin)
59
distal attachment of flexor carpi radialis
base of second metacarpal
60
actions of flexor carpi radialis
flexes and abducts hand at wrist
61
innervation of flexor carpi radialis
median nerve
62
proximal attachment of palmaris longus
medial epicondyle of humerus
63
distal attachment of palmaris longus
flexor retinaculum continuous with palmar aponeurosis
64
actions of palmaris longus
flexes hand at wrist, tenses palmar aponeurosis
65
innervation of palmaris longus
median nerve
66
proximal attachment of flexor carpi ulnaris
medial epicondyle of humerus
67
distal attachment of flexor carpi ulnaris
pisiform, hook of hamate, 5th metacarpal
68
which muscle of the forearm can be absent?
palmaris longus
69
actions of of flexor carpi ulnaris
flexes and adducts hand at wrist
70
innervation of flexor carpi ulnaris
ulnar nerve
71
superficial layer of anterior forearm is composed of these muscles
pronator teres flexor carpi radialis flexor carpi lunaris palmaris longus
72
intermediate layer of forearm is composed of these muscles
flexor digitorum superficialis
73
proximal attachment of flexor digitorum superficialis
medial epicondyle of humerus superior anterior border of radius
74
distal attachment of flexor digitorum superficialis
shafts of middle phalanges of medial 4 digits
75
actions of flexor digitorum superficialis
flexes middle phalanges at proximal interphalangeal joint flexes proximal phalanges at metacarpophalangeal joints
76
innervation of flexor digitorum superficialis
median nerve
77
deep layer of anterior forearm is composed of these muscles
flexor digitorum profundus flexor pollicis longus pronator quadratus
78
proximal attachment of flexor digitorum profundus
proximal medial and anterior surface of ulna and interosseous membrane
79
distal attachment of flexor digitorum profundus
bases of distal phalanges of 2nd-5th fingers
80
actions of flexor digitorum profundus
flexes distal phalanges at interphalangeal joints | power grip
81
innervation of flexor digitorum profundus
median (anterior interosseous nerve) and ulnar nerve
82
proximal attachment of flexor pollicis longus
anterior surface of radius and interosseous membrane
83
distal attachment of flexor pollicis longus
base of distal phalanx of thumb
84
actions of flexor pollicis longus
flexes thumb
85
innervation of flexor pollicis longus
median nerve via anterior interosseous nerve
86
proximal attachment of pronator quadratus
distal 1/4 of anterior surface os ulna
87
distal attachment of pronator quadrates
distal anterior surface of radius
88
actions of pronator quadratus
pronates forearm, deep fibers bind radius and ulna
89
innervation of pronator quadratus
median =nerve via anterior interosseous nevre
90
innervation of poster forearm
radial nerve | superficial and deep branches of radial nerve
91
muscles of the superficial extensors group
``` brachioradialis extensor carpi radialis longus extensor carpi radialis brevis extensor digitorum extensor digiti minimi extensor carpi lunaris ```
92
proximal attachment of brachioradialis
proximal supraepicondylar ridge of humerus
93
distal attachment of brachioradialis
distal radius | proximal to styloid process
94
actions of brachioradialis
flexes forearm why it is pronated
95
innervation of brachioradialis
radial nerve
96
proximal attachment of extensor carpi radialis longus
lateral supracondular ridge of humerus about same as brachioradialis
97
distal attachment of extensor carpi radialis longus
dorsal aspect of base of 2nd metacarpal
98
actions of extensor carpi radialis longus
extends and abducts hand at wrist
99
innervation of extensor carpi radialis longus
radial nerve
100
proximal attachment of extensor carpi radialis brevis
lateral epicondyle of humerus
101
distal attachment of extensor carpi radialis brevis
dorsal aspect base of 3rd metacarpal
102
innervation of extensor carpi radialis brevis
deep branch of radial nerve
103
proximal attachment of extensor digitorum
lateral epicondyle of humerus
104
distal attachment of extensor digitorum
extensor expansions of medial 4 fingers
105
actions of extensor digitorum
extends medial 4 fingers at metacarpophalangeal joints and somewhat at interphalangela joints
106
innervation of extensor digitorum
posterior interosseous nerve
107
proximal attachment of extensor digiti minimi
lateral epicondyle of humerus
108
distal attachment of extensor digiti minimi
extensor expansion of 5th finger
109
actions of extensor digiti minimi
extends 5th finger at metacarpophalangeal joint and secondarily at interphalangeal joints
110
innervation of extensor digiti minimi
posterior interosseous
111
proximal attachment of extensor carpi lunaris
lateral epicondyle and posterior border of ulna
112
distal attachment of extensor carpi lunaris
dorsal aspect of base for 5th metacarpal
113
innervation of extensor carpi lunaris
posterior interosseous nerve
114
actions of extensor carpi lunaris
extends and adducts hand at wrist
115
deep extensors
``` supinator extensor indicis abductor pollicis longus extensor pollicis longus extensor pollicis brevis ```
116
proximal attachment of supinator
lateral epicondyle of humerus radial collateral and angular ligaments ulnar crest
117
distal attachment of supinator
proximal radius (nearly all surfaces)
118
actions of supinator
supinates forearm bringing radius back to anatomical position
119
innervation of of supinator
deep branch of radial nerve
120
proximal attachment of extensor indicis
posterior surface of distal ulna and interosseous membrane
121
distal attachment of extensor indicis
extensor expansion of 2nd finger
122
actions of extensor indicis
independent extension of 2nd finger helps with extension of wrist
123
innervation of extensor indicis
posterior interosseous nerve
124
proximal attachment of abductor pollicis longus
posterior surface of proximal ulna and radius, interosseous membrane
125
distal attachment of abductor pollicis longus
base of 1st metacarpal
126
innervation of abductor pollicis longus
posterior interosseous nerve
127
actions of abductor pollicis longus
abducts thumb and extends at carpometacarpal joint
128
proximal attachment of extensor policies brevis
posterior surface of distal radius interosseous membrane
129
distal attachment of extensor policies brevis
dorsal aspect of proximal phalanx of thumb
130
actions of extensor policies brevis
extends proximal phalanx of thumb at its metacarpophalangeal joint extends carpometacarpal joint
131
innervation of extensor policies brevis
posterior interosseous nerve
132
proximal attachment of extensor policies longus
posterior surface of the middle ulna interosseous membrane
133
distal attachment of extensor policies longus
dorsal aspect of base of distal phalanx of thumb
134
actions of extensor policies longus
extends distal phalanx of thumb extends metacarpophalangeal and carpometacarpal joint
135
innervation of extensor policies longus
posterior interosseous nerve
136
what muscles compose the anatomical snuff box?
extensor pollicis longus extensor pollicis brevis abductor pollicis longus
137
what causes a radial nerve injury
fracture to humerus saft causes wrist drop
138
wrist drop
radial nerve injury paralysis of the extensors of the wrist and fingers resulting in inability to extend flexors bak over and wrist assumes a partial flexed positions

Exam 3- Anatomy (13 decks)

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