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Functional Anatomy > Muscles of anterior compartment of forearm > Flashcards

Muscles of anterior compartment of forearm Flashcards

1
Q

What is the proximal attachment of the pronator teres?

A

Ulnar head: coronoid process

Humeral head: Medial epicondyle of humerus

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2
Q

What is the distal attachment of the pronator teres?

A

Middle of convexity of lateral surface of radius

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3
Q

What nerve innervates the pronator teres?

A

Median nerve (C6,C7)

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4
Q

What is the muscle action of the pronator teres?

A

Pronates and flexes forearm at elbow

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5
Q

What is the proximal attachment of the flexor carpi radialis?

A

Medial epicondyle of humerus

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6
Q

What is the distal attachment of the flexor carpi radialis?

A

Base of second metacarpal

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7
Q

What nerve innervates the flexor carpi radialis?

A

Median nerve (C6,C7)

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8
Q

What is the muscle action of the flexor carpi radialis?

A

Flexes and abducts hand (at wrist)

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9
Q

What is the proximal attachment of the palmaris longus?

A

Medial epicondyle of humerus

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10
Q

What is the distal attachment of the palmaris longus?

A

Distal half of flexor retinaculum and apex of palmar aponeurosis

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11
Q

What nerve innervates the palmaris longus?

A

Median nerve (C7,C8)

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12
Q

What is the muscle action of the palmaris longus?

A

Flexes hand (at wrist) and tenses palmar aponeuosis

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13
Q

What is the proximal attachment of the flexor carpi ulnaris?

A

Humeral head: medial epicondyle of humerus

Ulnar head: Olecranon and posterior border of ulna

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14
Q

What is distal attachment of the flexor carpi ulnaris?

A

Pisiform, hook of hamate, 5th metacarpal

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15
Q

What nerve innervates the flexor carpi ulnaris muscle?

A

Ulnar nerve (C7,C8)

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16
Q

What is the muscle action of the flexor carpi ulnaris?

A

Flexes and adducts hand (at wrist)

17
Q

What is the proximal attachment of the flexor digitorum superficialis?

A

Humero-ulnar head: medial epicondyle

Radial head: superior half of anterior border

18
Q

What is the distal attachment of the flexor digitorum superficialis?

A

Shafts of middle phalanges of medial four digits

19
Q

What nerve innervates the flexor digitorum superficialis muscle?

A

Median nerve (C7,C8,T1)

20
Q

What is the muscle action of the flexor digitorum superficialis?

A

Flexes middle phalanges at proximal interphalangeal joints, and flexes proximal phalanges at metacarpophalangeal joints

21
Q

What is the proximal attachment of the flexor digitorum profundus?

A

Medial and lateral part: meidal and anterior surfaces of ulna and interosseous membrane

22
Q

What is the distal attachment of the flexor digitorum profundus?

A

Medial part: bases of distal phalanges of 4th and 5th digits

lateral part: bases of distal phalanges of 2nd and 3rd digits

23
Q

What is the muscle action of the flexor digitorum profundus?

A

Medial part: flexes distal phalanges 4 and 5 at distal interphalageal joints
Lateral parts: flexes distal phalanges 2 and 3 at distal interphalangeal joints

24
Q

What is the proximal attachment of the flexor pollicis longus?

A

Anterior surface of radius and adjacent interosseous membrane

25
Q

What is the distal attachment of the flexor pollicis longus?

A

Base of distal phalanx of thumb

26
Q

What nerve innervates the flexor pollicis longus, pronator quadratus, and the flexor digitorum profundus?

A

Anterior interosseous nerve, from median nerve (C8,T1)

27
Q

What is the muscle action of the flexor pollicis longus?

A

Flexes phalanges of 1st digit (thumb)

28
Q

What is the proximal attachment of the pronator quadratus?

A

Distal quarter of anterior surface of ulna

29
Q

What is the distal attachmnet of the pronator quadratus?

A

Distal quarter of anterior surface of radius

30
Q

What is the muscle action of the pronator quadratus?

A

Pronates forearm; deep fibers bind radius and ulna together

Functional Anatomy (9 decks)

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