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Upper Limb > Anterior Muscles of Forearm > Flashcards

Anterior Muscles of Forearm Flashcards

1
Q

What is the origin of the pronator teres?

A

Ulnar head originates on the coronoid process of the ulna

Humeral originates on the medial epicondyle of the humerus

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2
Q

Where does the pronator teres insert?

A

Middle convexity of lateral surface of radius

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3
Q

What is the innervation of the pronator teres?

A

Median nerve (C6, C7)

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4
Q

What action does the pronator teres perform?

A

Pronates and flexes the forearm

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5
Q

What is the origin of the flexor carpi radialis?

A

Medial epicondyle of humerus

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6
Q

Where does the flexor carpi radialis insert?

A

Base of 2nd or 3rd metacarpal

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7
Q

What is the innervation of the flexor carpi radialis?

A

Median nerve (C6, C7)

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8
Q

What action does the flexor carpi radialis perform?

A

Flexes and abducts hand at wrist

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9
Q

What is the origin of the palmaris longus?

A

Medial epicondyle of humerus

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10
Q

Where does the palmaris longus insert?

A

Distal half of flexor retinaculum, palmar aponeurosis

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11
Q

What is the innervation of the palmaris longus?

A

Median nerve (C7, C8)

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12
Q

What action does the palmaris longus perform?

A

Flexes hand and tenses palmar aponeurosis

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13
Q

What is the origin of the flexor carpi ulnaris?

A

Olecranon and posterior border of ulna via aponeurosis

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14
Q

Where does the flexor carpi ulnaris insert?

A

Pisiform, hook of hamate, 5th metacarpal

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15
Q

What is the innervation of the flexor carpi ulnaris?

A

Ulnar nerve (C7, C8)

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16
Q

What is the origin of the flexor digitorum superficialis?

A

Humero-ulnar head originates on the medial epicondyle of humerus and coronoid process of ulna
Radial head originates on oblique line of radius

17
Q

Where does the flexor digitorum superficialis insert?

A

Bodies of middle phalanges of medial four digits

18
Q

What is the innervation of the flexor digitorum superficialis?

A

Median nerve (C7, C8, T1)

19
Q

What action does the flexor digitorum superficialis perform?

A

Flexes wrist joint and flexes proximal interphalangeal joints of middle four digits; more strongly flexes proximal phalanges at metacarpophalangeal joints

20
Q

What is the origin of the flexor digitorum profundus?

A

Proximal three quarters of medial and anterior surfaces of ulna and interosseous membrane

21
Q

Where does the flexor digitorum profundus insert?

A

Bases of distal phalanges of 2nd, 3rd, 4th, and 5th digits

22
Q

What is the innervation of the flexor digitorum profundus?

A

Lateral part, to digits 2 and 3, is innervated by the median nerve (C8, T1)
Medial part, to digits 4 and 5, is innervated by the ulnar nerve (C8, T1)

23
Q

What action does the flexor digitorum profundus perform?

A

Flexes wrist joint and flexes distal interphalangeal joints of digits 2, 3, 4, and 5

24
Q

What is the origin of the flexor pollicis longs?

A

Anterior surface of radius and adjacent interosseous membrane

25
Q

Where does the flexor pollicis longus insert?

A

Base of distal phalanx of thumb

26
Q

What is the innervation of the flexor pollicis longs?

A

Anterior interosseous nerve from median nerve (C8, T1)

27
Q

What action does the flexor pollicis longus perform?

A

Flexes wrists and metacarpophalangeal and interphalangeal joints of thumb

28
Q

What is the origin of the pronator quadratus?

A

Distal quarter of anterior surface of ulna

29
Q

Where does the pronator quadratus insert?

A

Distal quarter of anterior surface of radius

30
Q

What is the innervation of the pronator quadratus?

A

Anterior interosseous nerve from median nerve (C8, T1)

31
Q

What action does the pronator quadratus perform?

A

Pronates forearm along with deep fibers binding radius and ulna together

32
Q

What action does the flexor carpi ulnaris perform?

A

Flexes and adducts hand at wrist

33
Q

What four muscles make up the superficial group of anterior forearm muscles?

A

Pronator teres, flexor carpi ulnaris, palmaris longus, and flexor carpi radialis

34
Q

What muscle makes up the intermediate group of anterior forearm muscles?

A

Flexor digitorum superficialis

35
Q

What muscles make up the deep group of anterior forearm muscles?

A

Flexor digitorum profundus, flexor pollicis longus, and pronator quadratus

Upper Limb (18 decks)

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