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Anatomy 6 > 57: Posterior Arm and Forearm > Flashcards

57: Posterior Arm and Forearm Flashcards

1
Q

three heads of triceps and their PA

A

long head: infraglenoid tubercle of scapula
lateral head: posterior surface of humerus superior to radial groove
medial head: posterior surface of humerus inferior to radial groove

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2
Q

DA triceps

A

proximal end of olecranon process (ulna)

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3
Q

A triceps

A

extension of arm, resists dislocation of arm, extension of forearm

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4
Q

N triceps

A

radial n.

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5
Q

PA aconeus

A

lateral epicondyle of humerus

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6
Q

DA aconeus

A

lateral surface of olecranon and proximal posterior surface of ulna

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7
Q

A aconeus

A

assists in extension of forearm, stabilizes elbow joint

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8
Q

N aconeus

A

radial n.

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9
Q

PA brachioradialis

A

lateral supracondylar ridge of humerus

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10
Q

DA brachioradialis

A

styloid process of radius

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11
Q

N brachioradialis

A

radial n.

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12
Q

A brachioradialis

A

flexion of forearm

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13
Q

PA extensor carpi radialis longus

A

lateral supracondylar ridge of humerus

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14
Q

DA extensor carpi radialis longus

A

dorsal base of MC II

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15
Q

N extesnor carpi radialis longus

A

radial n.

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16
Q

A extensor carpi radialis longus

A

extends and abducts wrist

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17
Q

PA extensor carpi radialis brevis

A

lateral epicondyle of humerus

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18
Q

DA extensor carpi radialis brevis

A

dorsal base of MC II

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19
Q

N extensor carpi radialis brevis

A

deep branch of radial n.

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20
Q

A extensor carpi radialis brevis

A

extends and abducts wrist

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21
Q

PA extensor carpi ulnaris

A

lateral epicondyle of humerus

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22
Q

DA extensor carpi ulnaris

A

dorsal base of MC V

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23
Q

N extensor carpi ulnaris

A

deep branch of radial n.

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24
Q

A extensor carpi ulnaris

A

extends and adducts wrist

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25
PA extensor digitorum
lateral epicondyle of humerus
26
DA extensor digitorum
extensor expansion of digits 2-5
27
N extensor digitorum
deep branch of radial n.
28
A extensor digitorum
extends digits 2-5 at all joints; extends wrist
29
PA extensor digiti minimi
lateral epicondyle of humerus
30
DA extensor digit minimi
extensor expansion of digit 5
31
A extensor digiti minimi
extend digit 5 at all joints; extends and adducts wrist
32
N extensor digiti minimi
deep branch of radial n.
33
PA supinator
lateral epicondyle of humerus; posterior olecranon process
34
DA supinator
proximo-lateral radius
35
N supinator
deep branch of radial n.
36
A supinator
supination
37
PA abductor pollicus longus
posterior ulna, radius, interosseous membrane
38
DA abductor pollicus longus
base of MC I
39
N abductor pollicis longus
posterior interosseous n.
40
the posterior interosseous n. is a terminal branch of...
deep branch of the radial n.
41
A abductor pollicis longus
abducts pollex
42
PA extensor pollicis longus
posterior ulna, interosseous membrane
43
DA extensor pollicis longus
base of distal phalanx of pollex
44
N extensor pollicis longus
posterior interosseous n.
45
A extensor pollicis longus
extends pollex at all joints
46
PA extensor pollicis brevis
posteior radius, interosseous membrane
47
DA extensor pollicis brevis
base of proximal phalanx of pollex
48
N extensor pollicis brevis
posterior interosseous n.
49
A extensor pollicis brevis
extends pollex at MCP joint
50
DA extensor indicis
extensor expansion of digit 2
51
PA extensor indicis
posterior ulna, interosseous membrane
52
N extensor indicis
posterior interosseous n.
53
A extensor indicis
extend the wrist and index finger at all joints
54
what does the triangular interval contain?
radial n. and deep brachial a.
55
borders of the triangular interval
lateral: lateral head of triceps medial: long head of tripceps superior: teres major
56
boundaries of anatomical snuff box
lateral: tendons of abductor pollicis longus and extensor pollicis brevis medial: tendon of extensor pollicis longus
57
what does the antaomical snuff box contain
radial a.
58
saturday night palsy/ honeymoon palsy/ crutch palsy "wrist drop"
compression of the radial n. due to pressure in the radial groove of the humerus weakness in triceps, loss of all muscles in posterior compartment of forearm
59
inability to extend thumb and MCP joints
damage to deep branch of radial n. at forearm level
60
"handcuff palsy"
due to compression of superficial branch of radial nerve at wrist (from handcuffs) paresthesia or numbness over dorsum of hand between MC I and II

Anatomy 6 (8 decks)

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