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Gross Anatomy > Test 2 Anterior Forearm Muscles > Flashcards

Test 2 Anterior Forearm Muscles Flashcards

0
Q

Pronator teres (PT) proximal attachment, origin

A

ulnar head:coronoid process of ulna

humeral head: medial epicondyle of the humerus

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1
Q

superficial (first) layer

anterior compartment of forearm

A
  • Pronator teres (PT)
  • flexor carpi radialis (FCR)
  • palmaris longus
  • flexor carpi ulnaris (FCU)
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2
Q

Pronator teres (PT) distal attachment, insertion

A

Middle of convexity of lateral surface of radius

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3
Q

pronator teres (PT) innervation

A

median nerve

C6 C7

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4
Q

pronator Teres (PT) action

A

pronates and flexes forearm(at elbow)

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5
Q

flexor carpi radialis (FCR) proximal attachment, origin

A

medial epicondyle of humerus

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6
Q

flexor carpi radialis (FCR) distal attachment insertion

A

base of 2nd (&3rd) metacarpal

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7
Q

flexor carpi radialis (FCR) innervation

A

median nerve

C6 C7

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8
Q

flexor carpi radialis (FCR) action

A

flexes and abducts hand (at wrist)

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9
Q

palmaris longus proximal attachment, origin

A

medial epicondyle of humerus

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10
Q

palmaris longus distal attachment insertion

A
  • distal 1/2 of flexor retinaculum

- palmar aponeurosis

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11
Q

palmaris longus innervation

A

median nerve

C7 C8

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12
Q

palmaris longus action

A

flexes hand (at wrist) and tenses palmar aponeurosis

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13
Q

flexor carpi ulnaris (FCU) proximal attachment origin

A

olecranon and posterior border (via aponeurosis)

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14
Q

flexor carpi ulnaris (FCU) distal attachment insertion

A
  • pisiform
  • hook of the hammate
  • 5th metacarpel
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15
Q

flexor carpi ulnaris (FCU) innervation

A

ulnar nerve C7 C8

16
Q

flexor carpi ulnaris (FCU):(humeral head, ulnar head) action

A

flexes and adducts hand (at wrist)

17
Q

intermediate (second) layer

anterior compartment of forearm

A

-flexor digitorum superficialis (FDS)

18
Q

flexor digitorum superficialis (FDS) proximal attachment, origin

A

humero-ulnar head: medial epicondyle of humerus and corocoid process of ulna

radial head: oblique line of radius

19
Q

flexor digitorum superficialis (FDS) distal attachment insertion

A

shafts (bodies) of middle phalanges of medial four digits

20
Q

flexor digitorum superficialis (FDS) innervation

A

medial nerve

C7 C8 T1

21
Q

flexor digitorum superficialis (FDS) action

A
  • flexes proximal interphalangeal jooints of middle four digits; acting more strongly
  • also flexes proximal phalanges at metacarpophalangeal joints
22
Q

deep (third) layer anterior compartment of forearm

A
  • flexor digitoum profundus (FDP)
  • flexor pollicis longus (FPL)
  • pronator quadratus
23
Q

flexor digitoum profundus (FDP) proximal attachment, origin

A

proximal three quarters of medial and anterior surfaces of ulna and interosseou membrane

24
Q

flexor digitoum profundus (FDP) distal attachment, insertion

A

base of distal phalanes of 2nd 3rd 4th and 5th digits

25
Q

flexor digitoum profundus (FDP) innervation

A

lateral part (to digits 2 and 3): median nerve C8 T1(anterior onterosseous branch)

medial part(to digits 4 and 5):ulnar nerve C8 T1

26
Q

flexor digitoum profundus (FDP) action

A

flexes interphalangeal joints of digits 2,3,4,5 assists with wrist flexion

27
Q

flexor pollicis longus (FPL) proximal attachment origin

A

anterior surface of radius and adjacent interosseous membrane

28
Q

flexor pollicis longus (FPL) distal attachment insertion

A

base of distal phalanx of thumb

29
Q

flexor pollicis longus (FPL) innervation

A

anterior interosseous nerve from median nerve C8 T1

30
Q

flexor pollicis longus (FPL) action

A

flaexes phalanges of first digit

thumb

31
Q

Pronator quadratus proximal attachment origin

A

distal quarter of anterior surface of ulna

32
Q

Pronator quadratus distal attachment insertion

A

distal quarter of anterior surface of radius

33
Q

Pronator quadratus innervation

A

anterior interosseous nerve from median nerve C8 T1

34
Q

Pronator quadratus action

A
  • pronates forearm

- deep fibers bind radius and ulna together

Gross Anatomy (20 decks)

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