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Anatomy > Antebrachium > Flashcards

Antebrachium Flashcards

1
Q

Action of the flexor carpi radialis muscle

A

Flexes and abducts hand (at wrist)

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2
Q

Innervation of the flexor carpi radialis muscle

A

Median nerve

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3
Q

Action of the palmaris longus muscle

A

Flexes hand (at wrist); tenses palmar aponeurosis

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4
Q

Innervation of the palmaris longus muscle

A

Median nerve

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5
Q

Action of the flexor carpi ulnaris muscle

A

Flexes and adducts hand at wrist

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6
Q

Innervation of the flexor carpi ulnaris muscle

A

Ulnar nerve

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7
Q

Action of the Flexor digitorum superficialis muscle

A

Interphalangeal joint and finger flexion

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8
Q

Innervation of the Flexor digitorum superficialis muscle

A

Median nerve

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9
Q

Action of Flexor digitorum profundus muscle

A

Flexion of 2nd through 5th digits; wrist/proximal and distal MP and IP flexion

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10
Q

Dual Innervation of Flexor digitorum profundus muscle

A

Median nerve (2-3 digits), ulnar nerve (4-5 digits)

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11
Q

Action of Flexor pollicis longus muscle

A

Flexion of the 1st digit (thumb)

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12
Q

Innervation of Flexor pollicis longus muscle

A

Anterior interosseous nerve (median nerve)

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13
Q

Action of Pronator quadratus muscle

A

Pronates forearm; stabilizes radius and ulna positioning with deep fibers

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14
Q

Innervation of Pronator quadratus muscle

A

Anterior interosseous nerve (median nerve)

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15
Q

Action of Extensor carpi radialis longus (ECRL) muscle

A

Hand extension and abduction at the wrist; active during fist clenching

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16
Q

Innervation of Extensor carpi radialis longus (ECRL) muscle

A

Radial nerve

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17
Q

Action of Extensor carpi radialis brevis (ECRB) muscle

A

Hand extension and abduction at the wrist

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18
Q

Innervation of Extensor carpi radialis brevis (ECRB) muscle

A

Deep branch of radial nerve

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19
Q

Forearm muscles with dual innervation

A

Flexor digitorum profundas and brachialis

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20
Q

Action of the extensor digiti minimi muscle

A

5th digit extension at MP joint with secondary at IP joint

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21
Q

Innervation of the extensor digiti minimi muscle

A

Deep branch of radial nerve

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22
Q

Action of the extensor digitorum muscle

A

Medial four digits extension at MP joint and secondarily at IP joint

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23
Q

Innervation of the extensor digitorum muscle

A

Deep branch of radial nerve

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24
Q

Action of the Extensor carpi ulnaris (ECU)

A

Hand extension and wrist adduction; active during fist clenching

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25
Q

Innervation of the Extensor Carpi Ulnaris muscle

A

Deep branch of radial nerve

26
Q

Action of the Extensor indices muscle

A

Extends 2nd digit; hand extension at the wrist

27
Q

Innervation of the Extensor indices muscle

A

Posterior interosseous nerve

28
Q

Action of the Abductor pollicis longus muscle

A

Abducts thumb and extends it at the carpometacarpal joint

29
Q

Innervation of the Abductor pollicis longus muscle

A

Posterior interosseous nerve

30
Q

Action of the Extensor pollicis longus (EPL) muscle

A

Distal phalanx of the thumb IP joint extension; MCP joint extension; and carpometacarpal joints

31
Q

Innervation of the Extensor pollicis longus (EPL)

A

Posterior interosseous nerve

32
Q

Action of the Extensor pollicis brevis (EPB) muscle

A

MCP joint extension at proximal thumb phalanx; and carpometacarpal joints

33
Q

Innervation of the Extensor pollicis brevis (EPB) muscle

A

Posterior interosseous nerve

34
Q

Most frequently fractured carpal that could lead to avascular necrosis of the proximal head

A

Scaphoid

35
Q

Most frequently dislocated carpal bone that may dislocate into the carpal tunnel and compress the median nerve

A

Lunate

36
Q

Nerve that may be compressed when the lunate bone is dislocated

A

Median nerve

37
Q

Name all the carpal bones

A

Scaphoid, lunate, triquetrum, pisiform, hamate, capitate, trapezoid, trapezium

38
Q

The 1st digit is lacking this bone

A

Middle phalanx

39
Q

Radial deviation describes this wrist movement

A

Abduction

40
Q

Ulnar deviation describes this wrist movement

A

Adduction

41
Q

Common origin of the anterior compartment of the forearm

A

Medial epicondyle

42
Q

Action of the anterior compartment of the forearm

A

Flexors and pronators

43
Q

Common origin of the posterior compartment of the forearm

A

Lateral epicondyle

44
Q

Action of the posterior compartment of the forearm

A

Extensors and supinators

45
Q

The median nerve runs through the two heads of this muscle

A

Pronator teres

46
Q

Muscle that can be absent on one or both sides in ~14% of people

A

Palmaris longus muscle

47
Q

Exceptional muscle that breaks two generalities of the forearm

A

Brachioradialis muscle
1. supplied by radial nerve thought it does flexion
2. flexor action though it is a posterior compartment

48
Q

The anterior interosseous nerve arises from this terminal nerve

A

Median nerve

49
Q

Groove between the pisiform bone and the hook of the hamate that the ulnar nerve and artery pass through

A

Guyon’s canal

50
Q

Terminal nerve that supplies the lateral cutaneous nerve of the forearm

A

Musculocutaneous nerve

51
Q

Divisions of the brachial artery at the cubital fossa

A

Ulnar and radial arteries

52
Q

Branches of the ulnar artery

A

Anterior and posterior ulnar recurrent arteries, common interosseous artery (anterior, posterior, and recurrent)

53
Q

The posterior interosseous nerve arises from this nerve

A

Deep branch of the radial nerve

54
Q

Muscles in the anterior compartment of the forearm (7)

A

Flexor carpi ulnaris, flexor carpi radialis, palmaris longus, flexor digitorum superficialis, flexor digitorum profundas, flexor pollicis longus, pronator quadratus

55
Q

Muscles in the posterior compartment of the forearm (11)

A

Extensor carpi radialis longus and brevis, extensor digiti minimi, extensor digitorum, extensor carpi ulnaris, extensor indices, abductor pollicis longus, extensor pollicis longus and brevis, anconeous, supinator

56
Q

Muscles in the superficial layer of the anterior compartment of the forearm (4)

A

Flexor carpi ulnaris and radialis, pronator teres, and palmaris longus

57
Q

Muscle in the intermediate layer of the anterior compartment of the forearm

A

Flexor digitorum superficialis

58
Q

Muscles in the deep layer of the anterior compartment of the forearm (3)

A

Flexor digitorum profundas, flexor pollicis longus, pronator quadratus

59
Q

Muscles in the superficial layer of the posterior compartment of the forearm (6)

A

Extensor carpi radialis longus and brevis, extensor digiti minimi, extensor digitorum, extensor carpi ulnaris, anconeous

60
Q

Muscles in the deep layer of the posterior compartment of the forearm (2)

A

Extensor indices and supinator

61
Q

Muscles in the deep outcropping layer of the posterior compartment of the forearm (3)

A

Abductor pollicis longus, extensor pollicis longus, extensor pollicis brevis

62
Q

Innervation of the deep layer and deep outcropping layer of the posterior compartment of the forearm

A

Posterior interosseous nerve

Anatomy (23 decks)

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