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A&P I Lab > Chp. 13: Muscular Skeleton (Humerus, forearm, hand and fingers) > Flashcards

Chp. 13: Muscular Skeleton (Humerus, forearm, hand and fingers) Flashcards

1
Q

Triceps Brachii

A

O: Long head (inferior margin of glenoid cavity), Lateral Head (posterior humerus), Medial head (distal radial groove on posterior humerus)
I: Olecrenon of Ulna
A: Powerful forearm extensor

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2
Q

Anconeus

A

O: Lateral epicondyle of humerus
I: Lateral aspect of olecrenon of ulna
A: Abducts ulna during forearm pronation

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3
Q

Biceps brachii

A

O: Short head (coracoid process), Long head (supraglenoid tubercle and lip of glenoid cavity; tendon runs in intertubercular sulcus and within capsule of shoulder joint)
I: Radial tuberosity
A: Flexion (powerful) and supination of forearm

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4
Q

Brachioradialis

A

O: Lateral ridge at distal end of humerus
I: Base of radial styloid process
A: Synergist in forearm flexion

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5
Q

Brachialis

A

O: Distal portion of anterior humerus
I: Coronoid process of ulna
A: Flexor of forearm

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6
Q

Pronator teres

A

O: Medial epicondyle of humerus and coronoid process of ulna
I: Midshaft of radius
A: Pronate Forearm

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7
Q

Flexor carpi radialis

A

O: Medial epicondyle of humerus
I: Base of metacarpals II and III
A: Powerful flexor and abductor of the hand

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8
Q

Palmaris longus

A

O: Medial epicondyle of humerus
I: Palmar aponeurosis; skin and fascia of palm
A: Tenses Skin and fascia of palm

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9
Q

Flexor carpi ulnaris

A

O: Medial epicondyle of humerus and olecrenon and posterior surface of ulna
I: Base of metacarpal V; pisiform and hamate bones
A: Flexes and adducts hand

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10
Q

Flexor digitorum superficialis

A

O: Medial epicondyle of humerus, coronoid process of ulna, and shaft of radius
I: Middle phalanges of fingers 2-5
A: Flexes hand and middle phalanges of fingers 2-5

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11
Q

Flexor pollicis longus

A

O:Anterior surface of radius, and interosseous membrane
I: Distal phalanx of thumb
A; Flexes Thumb

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12
Q

Flexor digitorum profundus

A

O: Anteromedial surface of ulna, interosseous membrane, and coronois process
I: Distal phalanx of thumb
A: flexes distal phalanges

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13
Q

Pronator quadratus

A

O: Distal portion of anterior ulnar surface
I: Anterior surface of radius, distal end
A: Pronates forearm

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14
Q

Extensor carpi radialis longus

A

O: Lateral supracondylar ridge of humerus
I: Base of metacarpal II
A: Extends and abducts hand

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15
Q

Extensor carpi radialis brevis

A

O: Lateral epicondyle of humerus
I: Base of metacarpal III
A: Extends and abducts hand

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16
Q

Extensor digitorum

A

O: Lateral epicondyle of humerus
I: by four tendons into distal phalanges of fingers 2-5
A: Prime mover of finger extension

17
Q

Extensor carpi ulnaris

A

O: Lateral epicondyle of humerus; posterior border of ulna
I: Base of metacarpal V
A: Extends and adducts hand

18
Q

Extensor pollicis longus and brevis

A

O: Muscle pair with a common origin and action; deep to extensor carpi ulnaris
I: Base of distal phalanx of thumb (longus) and proximal phalanx of thumb (brevis)
A: Extend thumb

19
Q

Abductor pollicis longus

A

O: Posterior surface of radius and ulna; interosseous membrane
I: metacarpal I and trapezium
A: Abducts and extends thumb

20
Q

Supinator

A

O: Lateral epicondyle of humerus; proximal ulna
I: Proximal end of radius
A: Synergist of biceps brachii to supinate forearm

21
Q

Abductor pollicis brevis

A

O: Transverse carpal ligament, the scaphoid and trapezium
I: Radial base of proximal phalanx of thumb and the thumb extensor
A: Abducts and Extends thumb

22
Q

Supinator

A

O: Lateral epicondyle of humerus; proximal ulna
I: Proximal end of radius
A: Synergist of biceps brachii to supinate forearm

23
Q

Subscapularis

A

O:

A&P I Lab (8 decks)

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