The anterior forearm Flashcards

1
Q

forearm compartments separated by

A
  • lateral intermuscular septum
  • interosseus membrane
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2
Q

types of bones in the hand

A
  • 8 carpal bones
  • 5 metacarpals
  • phalanges
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3
Q

Carpal bones

A
  • Scaphoid
  • Lunate
  • Triquetrum
  • Pisiform
  • Trapezium
  • Trapezoid
  • Capitate
  • Hamate
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4
Q

Metacarpals

A

Inside palm, not opposable except in thumb

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5
Q

Thumb phalanges

A
  • proximal phalanx
  • distal phalanx
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6
Q

finger phalanges

A
  • proximal phalanx
  • middle phalanx
  • distal phalanx
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7
Q

Superficial muscles of the anterior forearm

A
  • pronator teres
  • flexor carpi radialis
  • palmaris longus
  • flexor carpi ulnaris
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8
Q

intermediate muscles of anterior forearm

A
  • flexor digitorum superficialis
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9
Q

deep muscles of anterior forearm

A
  • flexor pollicis longus
  • flexor digitorum profundus
  • pronator quadratus
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10
Q

Pronator teres origin

A
  • Medial epicondyle of the humerus
  • Medial border of the coronoid process of the ulna
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11
Q

Pronator Teres insertion

A

mid-lateral surface of the radial shaft

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12
Q

Pronator Teres innervation

A

median nerve

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13
Q

Pronator Teres action

A

pronates and flexes forearm

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14
Q

Flexor carpi radialis origin

A

medial epicondyle through common flexor tendon

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15
Q

flexor carpi radialis insertion

A

base of metacarpal 2 and 3

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16
Q

flexor carpi radialis innervation

A

median nerve

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17
Q

flexor carpi radialis action

A

flexes and abducts hand at wrist joint

18
Q

Palmaris longus origin

A

common flexor tendon on medial epicondyle of humerus

19
Q

palmaris longus insertion

A

flexor retinaculum and palmar aponeurosis

20
Q

palmaris longus innervation

A

median nerve

21
Q

palmaris longus action

A

accessory flexor of the wrist joint

22
Q

flexor carpi ulnaris origin

A

common flexor tendon and medial border of olecranon of ulna

23
Q

flexor carpi ulnaris insertion

A

pisiform, hook of hamate, bases of metacarpal 5

24
Q

flexor carpi ulnaris innervation

A

ulnar nerve

25
Q

flexor carpi ulnaris action

A

powerful flexion and adduction wrist

26
Q

flexor digitorum superficialis origin

A

common flexor tendon, coronoid process of ulna, anterior surface of radial shaft

27
Q

flexor digitorum superficialis insertion

A

middle phalanges of digits 2 to 5

28
Q

flexor digitorum superficialis innervation

A

median nerve

29
Q

flexor digitorum superficialis action

A
  • flexes middle phalanges of digits 2 to 5
  • flexes proximal phalanges and wrist
30
Q

flexor pollicis longus origin

A

medial epicondyle of humerus, anterior surface of radius

31
Q

flexor pollicis longus insertion

A

base of distal phalanx of thumb

32
Q

flexor pollicis longus innervation

A

median nerve

33
Q

flexor pollicis longus action

A

flexes thumb

34
Q

flexor digitorum profundus origin

A

upper anterior shaft of ulna, adjacent interosseus membrane

35
Q

flexor digitorum profundus insertion

A

base of distal phalanges 2 to 5 through tendons of flexor digitorum superficialis

36
Q

flexor digitorum profundus innervation

A
  • lateral half by median nerve (index and middle fingers)
  • medial half by ulnar nerve (ring and little fingers)
37
Q

flexor digitorum profundus action

A

flexes distal phalanges of digits 2 to 5

38
Q

flexor tendons of digits rhyme

A

superficialis splits in 2 to allow profundus passing through

39
Q

pronator quadratus origin

A

distal 1/4 anterior surface of ulna

40
Q

pronator quadratus insertion

A

distal 1/4 anterior surface of radius

41
Q

pronator quadratus action

A

pronates forearm
pulls the distal end of the radius anteriorly over the ulna during pronation

42
Q

pronator quadratus innervation

A

median nerve
(anterior interosseous branch)