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Upper Limb > Wrist and Hand > Flashcards

Wrist and Hand Flashcards

1
Q

Proximal attachment of Palmaris Brevis

A

medial border of the palmar aponeurosis

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2
Q

Distal attachment of Palmaris Brevis

A

skin on medial border of hand

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3
Q

Innervation of Palmaris Brevis

A

deep branch of ulnar nerve

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4
Q

Action of Palmaris Brevis

A

Protects ulnar nerve & artery
Wrinkles skin of hypothenar eminence
Deepens hollow of the palm, aiding the palmar grip

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5
Q

Muscle(s) of Thenar compartment

A

innervated by the recurrent branch of the median nerve

Abductor Pollicis Brevis, Flexor Pollicis Brevis, Opponens Pollicis

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6
Q

Proximal attachment of Abductor Pollicis Brevis

A

flexor retinaculum & tubercles of scaphoid & trapezium

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7
Q

Distal attachment of Abductor Pollicis Brevis

A

lateral aspect of the base of the proximal phalanx of thumb

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8
Q

Innervation of Abductor Pollicis Brevis

A

recurrent branch of the median nerve

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9
Q

Action of Abductor Pollicis Brevis

A

abduct thumb at carpometacarpal joint & assist in opposition

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10
Q

Proximal attachment of Flexor Pollicis Brevis

A

flexor retinaculum & tubercles of scaphoid & trapezium

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11
Q

Distal attachment of Flexor Pollicis Brevis

A

lateral aspect of the base of the proximal phalanx of thumb

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12
Q

Innervation of Flexor Pollicis Brevis

A

recurrent branch of the median nerve

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13
Q

Action of Flexor Pollicis Brevis

A

flex thumb at carpometacarpal & metacarpalpharangeal joint & assist in opposition

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14
Q

Proximal attachment of Opponens Pollicis

A

flexor retinaculum & tubercles of scaphoid & trapezium

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15
Q

Distal attachment of Opponens Pollicis

A

lateral side of 1st metacarpal (thumb)

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16
Q

Innervation of Opponens Pollicis

A

recurrent branch of the median nerve

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17
Q

Action of Opponens Pollicis

A

oppose thumb at carpometacarpal joint

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18
Q

Muscle(s) of Adductor compartment

A

innervated by deep branch of ulnar nerve

Adductor Pollicis

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19
Q

Proximal attachment of Adductor Pollicis

A

capitate, base of 2nd & 3rd metacarpals, shaft of 3rd metacarpal

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20
Q

Distal attachment of Adductor Pollicis

A

medial side of base of proximal phalanx of thumb

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21
Q

Innervation of Adductor Pollicis

A

deep branch of ulnar nerve

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22
Q

Action of Adductor Pollicis

A

adducts thumb

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23
Q

Muscle(s) of Hypothenar compartment

A

innervated by the deep branch of the ulnar nerve

Abductor Digiti Minimi, Flexor Digiti Minimi, Opponens Digiti Minimi

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24
Q

Proximal attachment of Abductor Digiti Minimi

A

Pisiform

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25
Distal attachment of Abductor Digiti Minimi
Medial side of base of proximal phalanx of 5th digit
26
Innervation of Abductor of Digiti Minimi
deep branch of ulnar nerve
27
Action of Abbductor Digiti Minimi
Abducts 5th digit at metacarpalpharangeal joint
28
Proximal attachment of Flexor Digiti Minimi
Hamate
29
Distal attachment of Flexor Digiti Minimi
Medial side of base of proximal phalanx of 5th digit
30
Innervation of Flexor Digiti Minimi
deep branch of ulnar nerve
31
Action of Flexor Digiti Minimi
Flexes proximal phalanx of 5th digit at metacarpalpharangeal joint
32
Proximal attachment of Opponens Digiti Minimi
Hamate
33
Distal attachment of Opponens Digiti Minimi
Medial border of 5th metacarpal
34
Innervation of Opponens Digiti Minimi
deep branch of ulnar nerve
35
Action of Opponens Digiti Minimi
Opposes 5th digit at carpometacarpal joint
36
Muscle(s) of Central compartment
Lumbricals 1st & 2nd lumbricals innervated by median nerve 3rd & 4th lumbricals innervated by ulnar nerve
37
Proximal attachment of Lumbricals
Flexor digitorum profundas tendons
38
Distal attachment of Lumbricals
Lateral aspect of Extensor Expansions of 2nd-5th digits
39
Innervation of Lumbricals
1st & 2nd lumbricals innervated by median nerve | 3rd & 4th lumbricals innervated by ulnar nerve
40
Action of Lumbricals
Flex digits at metacarpophalangeal joint & extend digits at interphalangeal joint
41
Muscle(s) of Interosseous compartment
innervated by deep branch of ulnar nerve Palmar Interossei & Dorsal Interossei
42
Proximal attachment of Palmar Interossei
Palmar aspect of 2nd, 4th, & 5th metacarpal
43
Distal attachment of Palmar Interossei
Base of proximal phalanges & extensor expansions of 2nd, 4th, and 5th digits
44
Innervation of Palmar Interossei
Deep branch of ulnar nerve
45
Action of Palmar Interossei
ADduction digits to axial line (retract spread fingers) & can assist lumbricals in flexion at metacarpophalangeal joints & extension in interphalangeal joints
46
Proximal attachment of Dorsal Interossei
adjacent sides of 2 metacarpals
47
Distal attachment of Dorsal Interossei
Bases of proximal phalanges & extensor expansions of 2nd, 4th, & 5th digits
48
Innervation of Dorsal Interossei
Deep branch of ulnar nerve
49
Action of Dorsal Interossei
ABduct digits from axial line (spread fingers) & can assist lumbricals in flexion at metacarpophalangeal joints & extension at interphalangeal joints
50
___________ is the main contributor of the superficial palmar arch.
Ulnar artery
51
___________ is the main contributor of deep palmar arch.
Radial artery
52
Importance of Allen test
Used to check arterial anastomoses because occasionally do not get interconnection Means of checking if ULNAR ARTERY provides adequate circulation to the hand
53
Recurrent Branch of Median Nerve
Main motor branch of median nerve in hand Branches off distal to flexor retinaculum, enters thenar muscles Branches AFTER carpal tunnes, so WILL have problems moving thumb with carpal tunnel syndrome Innervates: Opponens Pollicis, Abductor Pollicis Brevis, Felxor Pollicis Brevis Supplies sensation to thumb-half of palmar aspect
54
Lateral Branch of Median Nerve
MOTOR and SENSORY Arises as median nerve enter palm Runs laterally to palmar thumb and radial side of 2nd finger Innervates 1st lumbrical, skin of thumb and radial half of second finger Divides into two common and three proper digital nerves
55
Medial Branch of Median Nerve
MOTOR and SENSORY Arises as median nerve enter palm of hand Runs medially to adjacent sides of fingers 2-4 Innervates 2nd lumbricals and skin of fingers 2-4 Divides into two common palmar digital nerves which each divide into two proper digital nerves
56
Palmar Cutaneous Branch of Median Nerve
SENSORY Arises proximal to flexor retinaculum - comes off BEFORE, carpal tunnel so not affected in carpal tunnel syndrome Runs between tendons of palmaris longus and lexor carpi radialis, superficial to flexor retinaculum Innervated skin of central palm
57
Palmar Cutaneous Branch of Ulnar Nerve
Proximal to flexor retinaculum Innervates skin at base of palm, over medial carpals
58
Dorsal Cutaneous Branch of Ulnar Nerve
Proximal to flexor retinaculum Supplies medial aspect of back of hand, including 5th and half of the 4th digit
59
Superficial Branch of Ulnar Nerve
Arises at wrist between pisiform and hamate bones Divides into two common palmar digital nerves Innervates palmaris brevis and helps give sensation to 5th and half of 4th digit and ulnar side of palm
60
Deep Branch of Ulnar Nerve
MOTOR nerve (to everything except LOAF) Arises at wrist between pisiform and hamate bones Innervates hypothenar muscles (Abductor, flexor, and opponens digiti minimi), 4th and 5th lumbricals, all interossei, adductor pollicis, and HALF of Flexor pollicis brevis)
61
Superficial Branch of Redial Nerve
SENSORY (common dorsal digital nn; proper dorsal digital nn) Arises from radial nerve in cubial fossa Supplies skin of half of dorsal hand and thumb, digits 2, 3, and half of 4

Upper Limb (2 decks)

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