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Gross Anatomy > Hand > Flashcards

Hand Flashcards

0
Q

Insertion of opponens pollicis

A

Lateral side of 1st metacarpal

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1
Q

Origin of opponens pollicis

A

Flexor retinaculum

Tubercles of scaphoid and trapezium

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2
Q

Innervation of opponens pollicis

A

Recurrent branch of median nerve C8, T1

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3
Q

Action of opponens pollicis

A

To oppose thumb

It draws 1st metacarpal medially to center of palm and rotates it medially

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5
Q

Muscles that originate from:
Flexor retinaculum
And
Tubercles of scaphoid and trapezium

A

Opponens pollicis
Abductor pollicis brevis
Flexor pollicis brevis

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6
Q

Origin of opponens pollicis

A

Flexor retinaculum

Tubercles of scaphoid and trapezium

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7
Q

Insertion of opponens pollicis

A

Lateral side of 1st metacarpal

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8
Q

Muscles innervated by recurrent branch of median nerve C8,T1

A

Opponens pollicis
Abductor pollicis brevis
Flexor pollicis brevis

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9
Q

Muscle innervated by deep branch of ulnar nerve C8,T1

A 
Adductor pollicis 
Abductor digiti minimi
Flexor digit minimi brevis
Opponens digit minimi 
Lumbrical 3 and 4
Dorsal interossei 1-4
Palmar interossei 1-3
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10
Q

Origin of adductor pollicis oblique head

A

Base of 2nd and 3rd metacarpal
Capitate
Adjacent carpals

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11
Q

Origin of adductor pollicis transverse head

A

Anterior surface of shaft of 3rd metacarpal

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12
Q

Muscles that insertion on the medial side of base of proximal phalanx of 5th finger

A

Abductor digit minimi

Flexor digiti minimi brevis

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13
Q

Muscles that originate on the flexor retinaculum and hook of hamate

A

Flexor digiti minimi

Opponens digit minimi

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14
Q

Origin of pronator teres

A

Ulnar head: coronoid process

Humeral head: medial epicondyle

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15
Q

Insertion of pronator teres

A

Middle of convexity of lateral surface of radius

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16
Q

Innervation of pronator teres

A

Median nerve C6,C7

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17
Q

Action of pronator teres

A

Pronation and flexion of forearm

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18
Q

Origin of flexor Carpi Radialis

A

Medial epicondyle

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19
Q

Insertion of flexor Carpi Radialis

A

Base of 2nd metacarpa

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20
Q

Innervation of flexor Carpi Radialis

A

Median nerve C6,C7

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21
Q

Action of flexor Carpi Radialis

A

Flexion and radial deviation

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22
Q

Origin of palmaris longus

A

Medial epicondyle

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23
Q

Insertion of palmaris longus

A

Distal half of flexor retinaculum

Palmar aponeurosis

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24
Q

Innervation of palmaris longus

A

Median nerve C7,C8

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25
Action of palmaris longus
Flexes wrist and tenses palmar aponeurosis
26
Origin of flexor Carpi ulnaris
Olecranon
27
Insertion of flexor Carpi ulnaris
Pisiform Hook of hamate 5th metacarpal
28
Innervation of flexor Carpi ulnaris
Ulnar nerve C7,C8
29
Action of flexor Carpi ulnaris
Flexion | Ulnar deviation
30
Origin of flexor digitorum superficialis
Humero-ulnar head: medial epicondyle & coronoid process | Radial head: oblique line of radius
31
Insertion of flexor digitorum superficialis
Shafts of middle phalanges of digits 2-5
32
Innervation of flexor digitorum superficialis
Median nerve C7,C8,T1
33
Action of flexor digitorum superficialis
Flexes proximal interphalangeal joints of digits 2-5 | Acting more strongly, flexes proximal phalanges at metacarpophalangeal joint
34
Origin of flexor digitorum profundus
Proximal 3/4 of anterior and medial surfaces of ulna | Interosseus membrane
35
Insertion of flexor digitorum profundus
Bases of distal phalanges of digits 2-5
36
Innervation of flexor digitorum profundus
Digits 2&3: median nerve C8,T1 | Digits 4&5: ulnar nerve C8,T1
37
Action of flexor digitorum profundus
Flexes distal interphalangeal joints of digits 2-5 | Assist with wrist flexion
38
Origin of flexor pollicis longus
Anterior surface of radius | And adjacent interosseus membrane
39
Insertion of flexor pollicis longus
Base of distal phalanx of thumb
40
Innervation of flexor pollicis longus
Anterior interosseus nerve from median nerve C8,T1
41
Action of flexor pollicis longus
Flexes thumb
42
Origin of pronator quadratus
Distal quarter of anterior surface of ulna
43
Insertion of pronator quadratus
Distal quarter of anterior surface of radius
44
Innervation of pronator quadratus
Anterior interosseus from median nerve C8,T1
45
Action of pronator quadratus
Pronates forearm | Binds ulna and radius together
46
Insertion of brachioradialis
Lateral surface of distal end of radius | Proximal to styled process
47
Innervation of brachioradialis
Radial nerve C5,C6,C7
48
Action of brachioradialis
Relatively weak flexion of forearm | Maximal when forearm is in midpronated position
49
Origin of extensor Carpi Radialis longus
Lateral supra-epicondylar ridge
50
Insertion of extensor Carpi Radialis longus
Dorsal aspect of base of 2nd metacarpal
51
Innervation of extensor Carpi Radialis longus
Radial nerve C6,C7
52
Action of extensor Carpi Radialis longus
Extends wrist | Radial deviation
53
Origin of extensor Carpi radial brevis
Lateral epicondyle
54
Insertion of extensor Carpi Radialis brevis
Dorsal aspect of base of 3rd metacarpal
55
Innervation of extensor Carpi Radialis brevis
Deep branch of radial nerve C7,C8
56
Action of extensor Carpi Radialis brevis
Extends hand Radial deviation Active during fist clenching
57
Origin of extensor digitorum
Lateral epicondyle
58
Insertion of extensor digitorum
Extensor expansion of medial 4 fingers
59
Innervation of extensor digitorum
Posterior interosseus nerve C7,C8 | Continuation of deep branch of radial nerve
60
Action of extensor digitorum
Extend medial 4 fingers Primarily at metacarpophalangeal joints Secondarily at interphalangeal joints
61
Origin of extensor digit minimi
Lateral epicondyle
62
Insertion of extensor digiti minimi
Extensor expansion of 5th finger
63
Innervation of extensor digiti minimi
Posterior interosseus nerve C7,C8 | Continuation of. Deep branch of radial nerve
64
Action of extensor digit minimi
Extends 5th finger Primarily at metacarpophalangeal joint Secondarily at interphalangeal joint
65
Origin of extensor Carpi ulnaris
Lateral epicondyle | Posterior border of ulna via a shared aponeurosis
66
Insertion of extensor Carpi ulnaris
Dorsal aspect of base of 5th metacarpal
67
Innervation of extensor Carpi ulnaris
Posterior interosseus nerve C7,C8 | Continuation of deep branch of radial nerve
68
Action of extensor Carpi ulnaris
Extends hand Ulnar deviation Active during fist clenching
69
Origin of supinator
``` Lateral epicondyle Radial collateral ligament Annular ligament Supinator fossa Crest of ulna ```
70
Insertion of supinator
Lateral, posterior, and anterior surfaces of proximal third of radius
71
Innervation of supinator
Deep branch of radial nerve C7,C8
72
Action of supinator
Supinates forearm | Rotates radius to turn palm anteriorly or superiorly (if elbow is flexed)
73
Origin of abductor pollicis longus
Posterior surface of proximal halves of ulna, radius, and interosseus membrane
74
Insertion of abductor pollicis longus
Base of 1st metacarpal
75
Innervation of abductor pollicis longus
Posterior interosseus nerve C7,C8 | Continuation of deep branch of radial nerve
76
Action of abductor pollicis longus
Abducts thumb | Extends thumb at carpometacarpal joint
77
Origin of extensor pollicis longus
Posterior surface of middle third of ulna and interosseus membrane
78
Insertion of extensor pollicis longus
Dorsal aspect of base of distal phalanx of thumb
79
Innervation of extensor pollicis longus
Posterior interosseus nerve C7,C8 | Continuation of deep branch of radial nerve
80
Action of extensor pollicis longus
Extends distal phalanx of thumb at interphalangeal joint | Extends metacarpophalangeal and carpometacarpal joints
81
Origin of extensor pollicis brevis
Posterior surface of distal third of radius and interosseus membrane
82
Insertion of extensor pollicis brevis
Dorsal aspect of base of proximal phalanx of thumb
83
Innervation of extensor pollicis brevis
Posterior interosseous nerve C7,C8 | Continuation of deep branch of radial nerve
84
Action of extensor pollicis brevis
Extends proximal phalanx of thumb at metacarpophalangeal joint Extends carpometacarpal joint
85
Origin of extensor indicis
Posterior surface of distal third of ulna and interosseous membrane
86
Insertion of extensor indicis
Extensor expansion if 2nd finger
87
Innervation of extensor indicis
Posterior interosseous nerve C7,C8 | Continuation of deep branch of radial nerve
88
Action of extensor indicis
Extends 2nd finger (Enabling its independent extension) Helps extend hand at wrist
91
Name the thenar muscles
Opponens pollicis Abductor pollicis brevis Flexor pollicis brevis Adductor pollicis
134
Origin of brachioradialis
Proximal two thirds of lateral supra-epicondylar ridge

Gross Anatomy (8 decks)

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