Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Anatomy Test 3 > The arm and forearm > Flashcards

The arm and forearm Flashcards

1
Q

Branches of the Brachial Artery

A

Profunda Brachii (Deep brachial artery)
Superior Ulnar Collateral
Inferior Ulnar Collateral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Branches of the Profunda Brachii (Deep brachial artery)

A

Posterior descending branch (= middle collateral)

Anterior descending branch (= radial collateral)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Anterior (Flexor) Compartment Muscles

A

Biceps Brachii (long and short head)
Brachialis
Coracobrachialis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Innervation of the Anterior (Flexor) Compartment

A

Musculocutaneous Nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Proximal attachment of long head of biceps brachii

A

Supraglenoid tubercle of scapula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Proximal attachment of short head of biceps brachii

A

Coracoid process of scapula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Distal attachment of Biceps Brachii

A

Radial tuberosity and fascia of forearm via bicipital aponeurosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Actions of Biceps Brachii

A

Supinates forearm, when supine will flex forearm

Resists dislocation of shoulder (short head)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Blood supply to Biceps Brachii

A

Brachial artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Innervation of Biceps Brachii

A

Musculocutaneous nerve (C5, C6)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Proximal attachment of Coracobrachialis

A

Coracoid process of scapula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Distal attachment of Coracobrachialis

A

Middle 1/3 of medial humeral surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Actions of Coracobrachialis

A

Flexes and adducts arm at shoulder joint

Resists dislocation of shoulder joint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Blood supply to Coracobrachialis

A

Brachial artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Innervation of Coracobrachialis

A

Musculocutaneous nerve (C5, C6, and C7)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Proximal attachment of Brachialis

A

Distal 1/2 of anterior surface of humerus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Distal attachment of Brachialis

A

Coronoid process and tuberosity of ulna

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Actions of Brachialis

A

Flexes forearm at elbow joint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Blood supply of Brachialis

A

Brachial artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Innervation of Brachialis

A 
Musculocutaneous nerve (C5, C6)
Lateral portions may receive radial nerve contributions
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Posterior (Extensor) Compartment Muscles

A 
Triceps Brachii (Long, Lateral, and Medial heads)
Anconeus
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Innervation of Posterior (Extensor) Compartment

A

Radial Nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Proximal attachment of Anconeus

A

Lateral epicondyle of humerus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Distal attachment of Anconeus

A

Lateral surface of olecranon, superior part of surface of ulna

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Actions of the Anconeus
Assists triceps in extension of forearm and stabilizes elbow joint; also abducts ulna during pronation
26
Blood supply of Anconeus
Deep brachial artery
27
Innervation of Anconeus
Radial nerve (C7, C8, T1)
28
Proximal attachment of Long head of Triceps Brachii
Infraglenoid tubercle
29
Proximal attachment of Lateral head of Triceps Brachii
Posterior surface of humerus
30
Proximal attachment of Medial head of Triceps Brachii
Posterior surface of humerus, inferior to radial groove (spiral groove)
31
Distal attachment of Triceps Brachii
Proximal end of olecranon and fascia of forearm
32
Actions of Triceps Brachii
Extends forearm at elbow joint (main) | Resists dislocation of shoulder joint (long head)
33
Blood supply of Triceps Brachii
Deep brachial artery
34
Innervation of Triceps Brachii
Radial nerve (C6, C7, C8)
35
The triceps are constantly acting as ______ to the forearm flexors.
Antagonists
36
The Cubital Fossa
A junction between the arm and forearm regions (Review slides starting on page 13)
37
Lateral boundary of the Cubital Fossa
Brachioradialis
38
Medial boundary of the Cubital Fossa
Pronator teres
39
Superior boundary of the Cubital Fossa
An imaginary line between medial and lateral epicondyles of humerus
40
Roof of Cubital Fossa
Skin, superficial and deep fascia, bicipital aponeurosis
41
Floor of Cubital Fossa
Supinator and Brachialis
42
Contents of the Cubital Fossa
1. Median nerve 2. Bifurcation of radial and ulnar arteries 3. Brachial veins (venae comitantes) 4. Tendon of biceps brachii and bicipital aponeurosis 5. Radial Nerve (deep radial nerve and superficial radial nerve)
43
Structural relationship of Bicipital Aponeurosis within the Cubital Fossa
Superficial to: Brachial Artery Median Artery
44
Structural relationship of Median Cubital Vein within the Cubital Fossa
Superficial to the bicipital aponeurosis
45
Structural relationship of Median Nerve within the Cubital Fossa
Medial to the brachial artery
46
Structural relationship of Musculocutaneous Nerve within the Cubital Fossa
Between biceps brachii and brachialis
47
Structural relationship of Radial Nerve within the Cubital Fossa
Between Brachioradialis and Brachialis
48
Structural relationship of Superficial Radial Nerve within the Cubital Fossa
Underneath Brachioradialis
49
Structural relationship of Supinator within the Cubital Fossa
Penetrated by deep radial nerve
50
Elbow Region Components
Triceps and olecranon process Anconeus Ulnar nerve rund posterior to medial epicondyle of humerus ("funny bone") Posterior ulnar recurrent artery
51
Cubital Anastomosis
See page 19 and draw it
52
Elbow joints
Humeroradial Humeroulnar Proximal Radioulnar
53
``` Arterial supply and cubital anastomoses: Proximal Sources (Collateral) - ```
Superior ulnar collateral (from brachial a.) Inferior ulnar collateral (from brachial a.) Radial collateral (Anterior desc. branch of deep brachial) Middle collateral (Posterior desc. branch of deep brachial)
54
``` Arterial Supply and Cubital Anastomoses: Distal Sources (Recurrent) - ```
Anterior ulnar recurrent a. (From ulnar a.) Posterior ulnar recurrent a. (from ulnar a.) Radial recurrent a. (from radial a.) Interosseous arteries (from common interosseous a. which is a branch of ulnar a.)
55
Interosseous arteries
Recurrent interosseous a. Anterior interosseous a. (not part of cubital anastomosis) Posterior interosseous a. (not part of cubital anastomosis)
56
Name the recurrent artery of the Inferior ulnar collateral
Anterior ulnar recurrent
57
Name the recurrent artery of the Superior ulnar collateral
Posterior ulnar recurrent
58
Name the recurrent artery of the Radial collateral
Radial recurrent
59
Name the recurrent artery of the Middle collateral
Interosseous arteries
60
Blood supply to Anterior Forearm
Ulnar a. Common Interosseous a. (via ant. interosseous a.) Radial a.
61
Blood supply to Anterior Hand
Superficial Palmar Arch (ulnar artery) | Deep Palmar Arch (radial artery)
62
Arterial supply to posterior forearm and hand
``` Radial artery (via deep palmar arch and dorsal carpal arch - hand) Common interosseous artery (posterior interosseous artery) Perforating (posterior) branch of anterior interosseous artery ```
63
Superficial muscles of the anterior forearm
Pronator Teres Flexor Carpi Radialis Palmaris Longus Flexor Carpi Ulnaris
64
Proximal attachment of Pronator Teres
Coronoid process of ulna | Humeral attachment
65
Distal attachment of Pronator Teres
Middle of lateral surface of radius
66
Actions of Pronator Teres
Pronates and flexes forearm at elbow
67
Innervation of Pronator Teres
Median Nerve
68
Proximal attachment of Flexor Carpi Radialis
Medial epicondyle of humerus ("Common flexor origin")
69
Distal attachment of Flexor Carpi Radialis
Base of 2nd metacarpal
70
Actions of Flexor Carpi Radialis
Flexes and abducts hand at wrist
71
Innervation of Flexor Carpi Radialis
Median nerve
72
Proximal attachment of Palmaris Longus
Medial epicondyle of humerus
73
Distal attachment of Palmaris Longus
Flexor retinaculum; continuous with palmar aponeurosis
74
Actions of Palmaris Longus
Flexes hand at wrist, tenses palmar aponeurosis
75
Innervation of Palmaris Longus
Median nerve
76
Proximal attachment of Flexor Carpi Ulnaris
Medial epicondyle of humerus
77
Distal attachment of Flexor Carpi Ulnaris
Pisiform, hook of hamate, 5th metacarpal
78
Actions of Flexor Carpi Ulnaris
Flexes and adducts hand at wrist
79
Innervation of Flexor Carpi Ulnaris
Ulnar nerve
80
Intermediate muscles of the anterior forearm
Flexor digitorum superficialis
81
Proximal attachment of Flexor Digitorum Superficialis
Medial epicondyle of humerus, superior 1/2 of anterior border of radius
82
Distal attachment of Flexor Digitorum Superficialis
Shafts of middle phalanges of medial 4 digits
83
Actions of Flexor Digitorum Superficialis
Flexes middle phalanges at proximal interphalangeal joint, flexes proximal phalanges at metacarpophalangeal joints
84
Innervation of Flexor Digitorum Superficialis
Median nerve
85
Deep muscles of the anterior forearm
Flexor digitorum profundus Flexor pollicis longus Pronator quadratus
86
Proximal attachment of Flexor Digitorum Profundus
Proximal 3/4 of medial and anterior surfaces of ulna and interosseous membrane
87
Distal attachment of Flexor Digitorum Profundus
Bases of distal phalanges of 2nd-5th fingers
88
Actions of Flexor Digitorum Profundus
Flexes distal phalanges of interphalangeal joints (power grip)
89
Innervation of Flexor Digitorum Profundus
Median (anterior interosseous nerve is branch from median nerve) and ulnar nerves
90
Proximal attachment of Flexor Pollicis Longus
Anterior surface of radius and interosseous membrane
91
Distal attachment of Flexor Pollicis Longus
Base of distal phalanx of thumb
92
Actions of Flexor Pollicis Longus
Flexes thumb
93
Innervation of Flexor Pollicis Longus
Median nerve via anterior interosseous nerve
94
Proximal attachment of Pronator Quadratus
Distal 1/4 of anterior surface of ulna
95
Distal attachment of Pronator Quadratus
Distal 1/4 of anterior surface of radius
96
Actions of Pronator Quadratus
Pronates forearm, deep fibers bind radius, and ulna together
97
Innervation of Pronator Quadratus
Median nerve via anterior interosseous nerve
98
Innervation of Posterior Forearm
Radial Nerve - Superficial branch of radial nerve (lateral, runs beneath brachioradialis) - Deep branch of radial nerve (posterior, becomes posterior interosseous nerve)
99
Superficial muscles of the posterior forearm
``` Brachioradialis Extensor carpi radialis longus Extensor carpi radialis brevis Extensor digitorum Extensor digiti minimi Extensor carpi ulnaris ```
100
Proximal attachment of Brachioradialis
Proximal 2.3 of supraepicondylar ridge of humerus
101
Distal attachment of Brachioradialis
Distal radius, proximal to styloid process
102
Actions of Brachioradialis
Flexes forearm when it is pronated (about midprone position)
103
Innervation of Brachioradialis
Radial nerve
104
Proximal attachment of Extensor Carpi Radialis Longus
Later supracondylar ridge of humerus
105
Distal attachment of Extensor Carpi Radialis Longus
Dorsal aspect of base of 2nd metacarpal
106
Actions of Extensor Carpi Radialis Longus
Extend and abduct hand at wrist
107
Innervation of Extensor Carpi Radialis Longus
Radial Nerve
108
Proximal attachment of Extensor Carpi Radialis Brevis
Lateral epicondyle of humerus (common extensor origin)
109
Distal attachment of Extensor Carpi Radialis Brevis
Dorsal aspect of base of 3rd metacarpal
110
Actions of Extensor Carpi Radialis Brevis
Extend and abduct hand at wrist
111
Innervation of Extensor Carpi Radialis Brevis
Deep branch of radial nerve
112
Proximal attachment of Extensor digitorum
Lateral epicondyle of humerus (common extensor origin)
113
Distal attachment of Extensor digitorum
Extensor expansions of medial 4 fingers
114
Actions of Extensor digitorum
Extends medial four fingers at metacarpophalangeal joints and somewhat at interphalangeal joints
115
Innervation of Extensor digitorum
Posterior interosseous nerve
116
Proximal attachment of Extensor digiti minimi
Lateral epicondyle of humerus (common extensor origin)
117
Distal attachment of Extensor digiti minimi
Extensor expansion of 5th finger
118
Actions of Extensor digiti minimi
Extends 5th finger at metacarpophalangeal joint and secondarily at interphalangeal joins
119
Innervation of Extensor digit minimi
Posterior interosseous nerve
120
Proximal attachment of Extensor carpi ulnaris
Later epicondyle of humerus and posterior border of ulna
121
Distal attachment of Extensor carpi ulnaris
Dorsal aspect of base of 5th metacarpal
122
Actions of Extensor carpi ulnaris
Extends and adducts hand at wrist
123
Innervation of Extensor carpi ulnaris
Posterior interosseous nerve
124
Deep muscles of the posterior forearm
Supinator Extensor indicis Abductor pollicis longus (outcropping muscle) Extensor pollicis longus (outcropping muscle) Extensor pollicis brevis (outcropping muscle)
125
Proximal attachment of supinator
Lateral epicondyle of humerus, radial collateral and anular ligament, and ulnar crest
126
Distal attachment of supinator
Proximal 1/3 of radius (nearly all surfaces, as it wraps around the bone)
127
Actions of supinator
Supinates forearm, bringing radius back to anatomical position
128
Innervation of supinator
Deep branch of radial nerve
129
Proximal attachment of Extensor indicis
Posterior surface of distal 1/3 of ulna and interosseous membrane
130
Distal attachment of Extensor indicis
Extensor expansion of 2nd finger
131
Actions of Extensor indicis
Independent extension of 2nd finger, but also helps with extension at wrist
132
Innervation of Extensor indicis
Posterior interosseous nerve (this nerve is the continuation of the deep branch of the radial nerve)
133
Proximal attachment of Abductor pollicis longus
Posterior surface of proximal 1/2 of ulna and radius, interosseous membrane
134
Distal attachment of Abductor pollicis longus
Base of 1st metacarpal
135
Actions of Abductor pollicis longus
Abducts thumb and extends it at carpometacarpal joint
136
Innervation of Abductor pollicis longus
Posterior interosseous nerve
137
Proximal attachment of Extensor pollicis brevis
posterior surface of distal 1/3 of radius, interosseous membrane
138
Distal attachment of Extensor pollicis brevis
Dorsal aspect of proximal phalanx of thumb
139
Actions of Extensor pollicis brevis
Extends proximal phalanx of thumb at its metacarpophalangeal joint, also extends carpometacarpal joint
140
Innervation of Extensor pollicis brevis
Posterior interosseous nerve
141
Proximal attachment of Extensor pollicis longus
Posterior surface of middle 1/3 of ulna, interosseous membrane
142
Distal attachment of Extensor pollicis longus
Dorsal aspect of base of distal phalanx of thumb
143
Actions of Extensor pollicis longus
Extends distal phalanx of thumb at it interphalangeal joint and extends the metacarpophalangeal and carpometacarpal joint
144
Innervation of Extensor pollicis longus
Posterior interosseous nerve
145
Components of the Anatomical Snuff Box
Extensor pollicis longus (ulnar border-more medial) Extensor pollicis brevis (radial border) Abductor pollicis longus (runs with e. p. brevis)
146
Describe a radial nerve injury
Full or partial paralysis of the extensors of the wrist and fingers results in the inability to extend and thus the flexors "take-over" and the wrist assumes a partially flexed position. "Wrist-drop"

Anatomy Test 3 (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions