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Human Anatomy 2 > Muscles Of The Arm, Forearm, & Wrist (2) > Flashcards

Muscles Of The Arm, Forearm, & Wrist (2) Flashcards

1
Q

What is the origin of the short head of the biceps brachii?

A

Tip of coracoid process

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2
Q

What is the origin of the long head of the biceps brachii?

A

Supraglenoid tubercle of scapula

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3
Q

What is the attachment of the biceps brachii?

A

Tuberosity of radius

Fascia of forearm through bicipital aponeurosis

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4
Q

What is the function of the biceps brachii?

A

Supinates forearm

When supine flexes forearm

Resist dislocation of shoulder (short head)

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5
Q

What is the origin of the brachialis?

A

Distal 1/2 of anterior surface of humerus

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6
Q

What is the attachment of the brachialis?

A

Coronoid process

Tuberosity of ulna

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7
Q

What is the function of the brachialis?

A

Flexes forearm

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8
Q

What is the origin of the coracobrachialis?

A

Tip of coracoid process of scapula

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9
Q

What is the attachment of the coracobrachialis?

A

Middle 1/3 of medial surface of humerus

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10
Q

What is the function of the coracobrachialis?

A

Helps flex and Adduct arm

Resists dislocation of shoulder

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11
Q

What is the origin of the long head of the triceps brachii?

A

Infraglenoid tubercle of scapula

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12
Q

What is the origin of the lateral head of the triceps brachii?

A

Posterior surface of humerus (superior to radial groove)

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13
Q

What is the origin of the medial head of the triceps brachii?

A

Posterior surface of humerus (inferior to radial groove)

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14
Q

What is the attachment of the triceps brachii?

A

Proximal end of olecranon

Fascia of forearm

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15
Q

What is the function of the triceps brachii?

A

Chief extensor of forearm

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16
Q

What does the long head of the triceps brachii resist?

A

Dislocation of the humerus during adduction

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17
Q

What is the origin of the Anconeus?

A

Lateral epicondyle of humerus

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18
Q

What is the attachment of the anconeus?

A

Lateral surface of olecranon

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19
Q

What is the function of the anconeus?

A

Assists triceps in extending forearm

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20
Q

What is the origin of the ulnar head of the pronator teres?

A

Coronoid process

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21
Q

What is the origin of the humeral head of pronator teres?

A

Medial epicondyle of humerus

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22
Q

What is the attachment of the pronator teres?

A

Middle of convexity of lateral radius

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23
Q

What is the function of the pronator teres?

A

Pronates and flexes forearm

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24
Q

What is the origin of the flexor carpi radialis?

A

Medial epicondyle of humerus

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25
What is the attachment of the flexor carpi radialis?
Base of 2nd metacarpal
26
What is the function of the flexor carpi radialis?
Flexes and abducts hand
27
What is the origin of the palmaris longus?
Medial epicondyle of humerus
28
What is the attachment of the palmaris longus?
Distal 1/2 of flexor retinaculum Apex of palmar aponeurosis
29
What is the function of the palmaris longus?
Flexes hand Tenses palmar aponeurosis
30
What is the origin of the humeral head of the flexor carpi ulnaris?
Medial epicondyle of the humerus
31
What is the origin of the ulnar head of the flexor carpi ulnaris?
Olecranon
32
What is the attachment of the flexor carpi ulnaris?
Pisiform Hook of hamate 5th metacarpal
33
What is the function of the flexor carpi ulnaris?
Flexes and Adducts hand
34
What is the origin of the humero-ulnar head of the flexor digitorum superficialis?
Medial epicondyle
35
What is the origin of the radial head of the flexor digitorum superficialis?
Superior 1/2 of anterior border
36
What is the attachment of the flexor digitorum superficialis?
Shafts of middle phalanges
37
What is the function of the flexor digitorum superficialis?
Flexes middle phalanges at PIP of 2-5 digits Flexes proximal phalanges at MCP joint 2-5 digits
38
What is the origin of the flexor digitorum profundus?
Proximal 3/4 of medial and anterior surface of ulna Interosseus membrane
39
What is the attachment of the medial part of the flexor digitorum profundus?
Bases of distal phalanges of 4th and 5th digits
40
What is the attachment of the lateral part of the flexor digitorum profundus?
Bases of distal phalanges of 2nd and 3rd digits
41
What is the function of the medial part of the flexor digitorum profundus?
Flexes distal phalanges 4 and 5 at DIP
42
What is the function of the lateral part of the flexor digitorum profundus?
Flexes distal phalanges 2 and 3 at DIP
43
What is the origin of the flexor pollicis longus?
Anterior surface of radius Adjacent interosseus membrane
44
What is the attachment of the flexor pollicis longus?
Base of distal phalanx of thumb
45
What is the function of the flexor pollicis longus?
Flexes phalanges of 1st digit
46
What is the origin of the pronator quadratus?
Distal 1/4 of anterior ulna
47
What is the attachment of the pronator quadratus?
Distal 1/4 of anterior radius
48
What is the function of the pronator quadratus?
Pronates forearm Deep fibers bind radius and ulna together
49
What is the origin of the brachioradialis?
Proximal 2/3 of lateral Supra epicondylar ridge of humerus
50
What is the attachment of the brachioradialis?
Lateral surface of distal radius (proximal to styloid process)
51
What is the function of the brachioradialis?
Weak flexion of forearm
52
What is the origin of the extensor carpi radialis longus?
Lateral Supra condylar ridge of humerus
53
What is the attachment of the extensor carpi radialis longus?
Dorsal aspect of 2nd metacarpal base
54
What is the function of the extensor carpi radialis longus?
Extends and abducts the hand Active during fist clenching
55
What is the origin of the extensor carpi radialis brevis?
Lateral epicondyle of the humerus
56
What is the attachment of the extensor carpi radialis brevis?
Dorsal aspect of 3rd metacarpal base
57
What is the function of the extensor carpi radialis brevis?
Extends and abducts the hand Active during fist clenching
58
What is the origin of the extensor digitorum?
Lateral epicondyle of the humerus
59
What is the attachment of the extensor digitorum?
Extensor expansions of medial four digits
60
What is the function of the extensor digitorum?
Extends medial 4 digits at MCP
61
What is the origin of the extensor digiti minimi?
Lateral epicondyle of the humerus
62
What is the attachment of the extensor digiti minimi?
Extensor expansion at the 5th digit
63
What is the function of the extensor digiti minimi?
Extends the 5th digit at MCP
64
What is the origin of the extensor carpi ulnaris?
Lateral epicondyle of humerus
65
What is the attachment of the extensor carpi ulnaris?
Dorsal aspect of base of 5th metacarpal
66
What is the function of the extensor carpi ulnaris?
Extends and Adducts hand Active during fist clenching
67
What is the origin of the supinator?
Lateral epicondyle of humerus
68
What is the attachment of the supinator?
Lateral, posterior, and anterior surface of proximal 1/3 radius
69
What is the function of the supinator?
Supinates forearm
70
What is the origin of the abductor pollicis longus?
Posterior surface of proximal 1/2 of ulna, radius, and interosseus membrane
71
What is the attachment of the abductor pollicis longus?
Base of 1st metacarpal
72
What is the function of the abductor pollicis longus?
Abducts thumb Extends thumb at CMC joint
73
What is the origin of the extensor pollicis longus?
Posterior surface of middle third of ulna and interosseus membrane
74
What is the attachment of the extensor pollicis longus?
Dorsal aspect distal phalanx of thumb
75
What is the function of the extensor pollicis longus?
Extends distal phalanx of thumb at IP joint
76
What is the origin of the extensor pollicis brevis?
Posterior surface of distal third of radius and interosseus membrane
77
What is the attachment of the extensor pollicis brevis?
Dorsal aspect of proximal phalanx base of thumb
78
What is the function of the extensor pollicis brevis?
Extends proximal phalanx of thumbs at MCP joint
79
What is the origin of the extensor indicis?
Posterior surface of distal 3rd of ulna and interosseus membrane
80
What is the attachment of the extensor indicis?
Extensor expansion of 2nd digit
81
What is the function of the extensor indicis?
Extends 2nd digit Helps extend hand at wrist

Human Anatomy 2 (20 decks)

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