Arm and forearm Flashcards

1
Q

Anterior compartment of arm - nerve supply

A

Musculocutaneous nerve

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2
Q

Anterior compartment of arm - arterial supply

A

Brachial artery

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3
Q

Anterior compartment of arm - venous drainage

A
Cephalic vein (lateral aspects) 
Basilic vein (medial aspects)
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4
Q

Anterior compartment of arm - muscles (3)

A

BBC
Biceps brachi
Brachialis
Coracobrachialis

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5
Q

Anterior compartment of arm - biceps brachii location

A

Most anteriorly positioned

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6
Q

Anterior compartment of arm - biceps brachii function

A

Flex elbow joint
Flex shoulder joint
Supinates forearm

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7
Q

Anterior compartment of arm - coracobrachialis location

A

Deep to biceps brachii
Medial to brachialis
More superior

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8
Q

Anterior compartment of arm - coracobrachialis function

A

Flexion and adduction of shoulder

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9
Q

Anterior compartment of arm - brachialis location

A

Deep to biceps brachii

Lateral to coracobrachialis

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10
Q

Anterior compartment of arm - brachial function

A

Flexion of elbow

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11
Q

Posterior compartment of arm - muscles (1)

A
Triceps brachii
(long head, lateral head, medial head)
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12
Q

Posterior compartment of arm - triceps brachii function

A

Extension of the arm (at shoulder joint)

Extension of the forearm (at elbow joint)

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13
Q

Posterior compartment of arm - nerve supply

A

Radial nerve

Axillary nerve - supplies sensory innervation to badge patch area (lateral aspect of arm)

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14
Q

Posterior compartment of arm - arterial supply

A

Ulnar artery branch - Posterior interosseous artery

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15
Q

Cubital fossa - definition

A

Triangular depression on the anterior surface of the elbow

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16
Q

Cubital fossa - boundaries

A
Superiorly - imaginary line connecting medial and lateral epicondyles 
Medially - pronator teres
Laterally - brachioradialis
Floor - brachialis 
Roof - bicipital aponeurosis
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17
Q

Cubital fossa - superficial contents

A

Median cubital vein
Cephalic vein
Basilic vein

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18
Q

Cubital fossa - deep contents

A

Median nerve
Brachial artery
Radial nerve

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19
Q

Which veins are commonly used for venipuncture and cannulation?

A

Cephalic vein

Basilica vein

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20
Q

Name 2 elbow joints

A

Humero-ulnar joint

Radio-capitellar joint

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21
Q

Anterior compartment of the forearm - nerve supply

A

Median nerve - majority

Ulnar nerve - flexor carpi ulnaris, medial half of flexor digitorum profundus (ring finger and little finger)

22
Q

Anterior compartment of the forearm - movements

A

Flexion of wrist and digits

Pronation, abduction and adduction of wrist

23
Q

Anterior compartment of the forearm - how many layers of muscles?

A
3 layers
Layer 1 (superficial muscles)
Layer 2 (intermediate muscles)
Layer 3 (deep muscles)
24
Q

Anterior compartment of the forearm - superficial muscles (layer 1) (4)

A
From medial to lateral:  
Flexor carpi ulnaris 
Palmaris longus 
Flexor carpi radialis
Pronator teres
25
Q

Anterior compartment of the forearm - superficial muscles (layer 1) - which of these muscles do some people not have?

A

Palmaris longus

26
Q

Anterior compartment of the forearm - superficial muscles (layer 1) pronator teres function

A

Pronation of forearm

27
Q

Anterior compartment of the forearm - superficial muscles (layer 1) palmaris longus function

A

Flexion at wrist

28
Q

Anterior compartment of the forearm - superficial muscles (layer 1) flexor carpi radialis function

A

Flexion and abduction at wrist

29
Q

Anterior compartment of the forearm - superficial muscles (layer 1) flexor carpi ulnaris function

A

Flexion and adduction at wrist

30
Q

Anterior compartment of the forearm - intermediate muscles (layer 2) (1)

A

Flexor digitorum superficialis (splits into 4 tendons at the wrist)

31
Q

Anterior compartment of the forearm - intermediate muscles (layer 2) flexor digitorum superficialis

A

Flexes MCP and PIP joints in fingers

Flexes wrist

32
Q

Anterior compartment of the forearm - deep muscles (layer 3) (3)

A

Flexor digitorum profundus
Flexor pollicis longus
Pronator quadratus

33
Q

Anterior compartment of the forearm - deep muscles (layer 3) flexor digitorum profundus

A

Splits into 4 tendons at wrist

Flexion of DIP and MCP joints

34
Q

Anterior compartment of the forearm - deep muscles (layer 3) flexor policies longus

A

Lateral to FDP

Flexion of thumb

35
Q

Anterior compartment of the forearm - deep muscles (layer 3) pronator quadratus

A

Pronation of forearm

36
Q

Posterior compartment of the forearm - superficial muscles (5)

A
Brachioradialis 
Extensor carpi ulnaris 
Extensor carpi radialis 
Extensor digitorum 
Extensor digiti minimi
37
Q

Posterior compartment of the forearm - deep muscles (5)

A
Supinator 
Extensor pollicis longus 
Extensor pollicis brevis 
Abductor pollicis longus 
Extensor indicis
38
Q

Posterior compartment of the forearm - overall function

A

Extension of wrist and fingers

39
Q

Posterior compartment of the forearm - nerve supply

A

Radial nerve

40
Q

Posterior compartment of the forearm - superficial muscles - brachioradialis

A

Flexion of elbow (doesn’t fit the extension rule)

41
Q

Posterior compartment of the forearm - superficial muscles - extensor carpi radialis

A

extension and abduction of wrist

42
Q

Posterior compartment of the forearm - superficial muscles - extensor carpi ulnaris

A

Extension and adduction of wrist

43
Q

Posterior compartment of the forearm - superficial muscles - extensor digitorum

A

Splits into 4

Extensor of fingers (not thumb)

44
Q

Posterior compartment of the forearm - superficial muscles - extensor digit minimi

A

Extension of little finger

45
Q

Posterior compartment of the forearm - deep muscles - supinator

A

Supinates forearm

46
Q

Posterior compartment of the forearm - deep muscles - abductor policis longus

A

Abduction of thumb

Nerve supply: posterior interosseous branch of radial nerve

47
Q

Posterior compartment of the forearm - deep muscles - extensor policies longs and brevis

A

Extension of thumb

Nerve supply: posterior interosseous branch of radial nerve

48
Q

Posterior compartment of the forearm - deep muscles - extensor indices

A

Extends index finger

Nerve supply: posterior interosseous branch of radial nerve

49
Q

Extensor retinaculum

A

Thickened part of the antebrachial (deep) fascia that holds the tendons of the extensor muscles in space.
It is located on the posterior aspect of the forearm, just proximal to the hand

50
Q

Flexor retinaculum

A

The antebrachial (deep) fascia of the anterior forearm which attaches to the scaphoid/trapezium laterally and the pisiform/hamate medially.

51
Q

Flexor retinaculum - function

A

Prevents bowstring of the tendons during flexion, which would reduce muscle efficiency