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Anatomy > Arms and forearms > Flashcards

Arms and forearms Flashcards

(92 cards)

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1
Q

Triceps Brachii

proximal attachment

A

infraglenoid tubercle
posterior surface of humeral shaft
poster surface of humerus

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2
Q

Triceps Brachii distal attachment

A

olceranon process of ulna via common tendon

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3
Q

Triceps brachii innervation

A

radial nerve (C6,C7,C8)

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4
Q

Triceps brachii action

A

chief extensor of forearm

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5
Q

Anconeous proximal attachment

A

lateral epicondyle of humerus

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6
Q

Anconeous distal attachment

A

lateral surface of olcranon

superior part of posterior surface of ulna

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7
Q

Anconeous innervation

A

radial nerve (C7-T1)

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8
Q

Anconeous action

A

assists triceps in extending forearm

stabilizes elbow joint

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9
Q

Ulnar Collateral Ligament

A

-connects humerus to ulna on medial side

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10
Q

Radial Collateral Ligament

A

-connects humerus to annular ligament on lateral side where capitulum of humerus articulates with radiud

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11
Q

Annular Ligament

A

attached at both ends to ulna and straps radius against ulna

  • radius pivots around ulna
  • ulna remains stable and cannot rotate on humerus
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12
Q

Function of ulnar collateral ligament

A

resist any movement going laterally

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13
Q

Function of Radial Collateral Ligament

A

resist medial movement of the arm

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14
Q

Supinator origin

A

Lateral epicondyle of humerus, RCL and annular ligaments and supinator fossa and crest of ulna

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15
Q

Supinator attachment

A

lateral, posterior and anterior surface of proximal 1/3 of radius

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16
Q

Supinator action

A

supinates forearm (rotates radius to turn palm anteriorly)

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17
Q

Supinator innervation

A

deep branch of radial nerve (C5 and C6)

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18
Q

Pronator teres origin

A

medial epicondyle of humerus and coronoid process of ulna

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19
Q

Pronator teres attachment

A

middle of lateral suface of radius

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20
Q

Pronator teres action

A

pronates and flexes forearm

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21
Q

Pronator teres innervation

A

median nerve (C6, C7)

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22
Q

Pronator quadratus origin

A

distal 1/4 of anterior surface of una

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23
Q

Pronator quadratus attachment

A

distal 1/4 of anterior surface of radius

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24
Q

Pronator quadratus action

A

pronates forearm

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25
Pronator quadratus innervation
anterior interosseous nerve from median nerve (C8 and T1)
26
Flexor carpi radialis origin
medial epicondyle of humerus
27
Flexor carpi radialis attachment
base of 2nd metacarpal
28
Flexor carpi radialis action
flexes and radial (at wrist)
29
Flexor carpi radialis innervation
median nerve (C6, C7)
30
Palmaris Longus origin
medial epicondyle of humerus
31
Palmaris Longus attachment
Distal half of flexor retinaculum and palmar aponeurosis
32
Palmaris Longus action
flexes hand (at wrist) and tightens palmar aponeurosis
33
Palmaris Longus innervation
median nerve (C7,C8)
34
Flexor carpi ulnaris origin
Humeral head; medial epicondyle of humerus
35
Flexor carpi ulnaris attachment
pisiform bone, hook of hamate and 5th metacarpal bone
36
Flexor carpi ulnaris action
flexes and ulnar flexion (at wrist)
37
Flexor carpi ulnaris innervation
ulnar nerve (C7, C8)
38
Flexor digitorum superficialis origin
Humeroulnar head: medial epicondyle of humerus, ulnar collateral ligament, and coronoid process of ulna; Radial head: superior half of anterior border of radius
39
Flexor digitorum superficialis attachment
bodies of middle phalanges of digits 2-5
40
Flexor digitorum superficialis action
Flexes middle phalanges at proximal interphalangeal joints of medial four digits; acting more strongly, it also flexes proximal phalanges at metacarpophalangeal joints and hand
41
Flexor digitorum superficialis innervation
median nerve (C7,C8,T1)
42
Flexor digitorum Profundus origin
Proximal 3/4 of medial and anterior surfaces of ulna and interosseous membrane
43
Flexor digitorum Profundus attachment
Base of the distal phalanx of digits 2 - 5
44
Flexor digitorum Profundus action
Flexes distal phalanges at distal interphalangeal joints of medial four digits; assists with flexion of hand
45
Flexor digitorum Profundus innervation
Medial part: ulnar nerve (C8 and T1); Lateral part: anterior interosseous branch of median nerve (C8 and T1) (C8, T1)
46
Flexor pollicis longus origin
Anterior surface of radius and adjacent interosseous membrane
47
Flexor pollicis longus attachment
Base of distal phalanx of thumb
48
Flexor pollicis longus action
Flexes phalanges of 1st digit (thumb)
49
Flexor pollicis longus innervation
Anterior interosseous nerve from median nerve (C8 and T1)
50
Brachioradialis origin
Proximal 2/3 of lateral supracondyle ridge of humerus
51
Brachioradialis attachment
Lateral surface of distal end of radius
52
Brachioradialis action
flexes forearm
53
Brachioradialis innervation
radial nerve (C5,C6,C7)
54
Extensor carpi radialis brevis origin
lateral epicondlye of humerus
55
Extensor carpi radialis brevis attachment
base of 3rd metacarpal
56
Extensor carpi radialis brevis action
extend and abduct hand at wrist joint
57
Extensor carpi radialis brevis innervation
deep branch of radial nerve (C7,C8)
58
Extensor carpi radialis longus origin
Lateral supracondyle ridge of humerus
59
Extensor carpi radialis longus attachment
Base of 2nd metacarpal
60
Extensor carpi radialis longus innveration
radial nerve (C6,C7)
61
Extensor digitorum: All medial four origin
lateral epicondyle of humerus
62
Extensor digitorum: All medial four attachment
extensor expansions of medial four digits
63
Extensor digitorum: All medial four action
Extends medial four digits at metacarpophalangeal joints; Extends hand at wrist joint
64
Extensor digitorum: All medial four innervation
Posterior interosseous nerve (C7 and C8), the continuation of the deep branch of the radial nerve (C7, C8)
65
Extensor carpi ulnaris origin
Lateral epicondyle of humerus and posterior border of ulna
66
Extensor carpi ulnaris attachment
Base of 5th metacarpal
67
Extensor carpi ulnaris action
Extends and adducts hand at wrist joint
68
Extensor carpi ulnaris innveration
Posterior interosseous nerve (C7 and C8), the continuation of the deep branch of the radial nerve (C7, C8)
69
Extensor digiti minimi origin
Lateral epicondyle of humerus
70
Extensor digiti minimi attachment
Extensor expansion of 5th digit
71
Extensor digiti minimi action
Extends 5th digit at metacarpophalangeal and interphalangeal joints
72
Extensor digiti minimi innervation
Posterior interosseous nerve (C7 and C8), the continuation of the deep branch of the radial nerve (C7, C8)
73
Extensor indices origin
Posterior surface of ulna and interosseous membrane
74
Extensor indices attachment
Extensor expansion of 2nd digit
75
Extensor indices action
Extends 2nd digit and helps to extend hand
76
Extensor indices innervation
Posterior interosseous nerve (C7 and C8), the continuation of the deep branch of the radial nerve (C7, C8)
77
Extensor pollicis brevis origin
Posterior surfaces of radius and interosseous membrane
78
Extensor pollicis brevis attachment
Base of proximal phalanx of thumb
79
Extensor pollicis brevis action
Extends proximal phalanx of thumb at carpometacarpal joint
80
Extensor pollicis brevis innveration
Posterior interosseous nerve (C7 and C8), the continuation of the
81
Extensor pollicis longus origin
Posterior surface of middle 1/3 of ulna and interosseous membrane
82
Extensor pollicis longus attachment
Base of distal phalanx of thumb
83
Extensor pollicis longus action
Extends distal phalanx of thumb at carpometacarpal and interphalangeal joints
84
Extensor pollicis longus innveration
Posterior interosseous nerve (C7 and C8), the continuation of the deep branch of the radial nerve (C7, C8)
85
Bicep Brachii origin
- apex of coracoid | - supraglenoid tubercle (long head)
86
Biceps Brachii attachment
radial tuberosity
87
Biceps Brachii action
supinator of forearm | powerful flexor of elbow joint
88
Biceps Brachii innveration
Musculocutanous (C5,C6,C7)
89
Coracobrachialis origin
tip of coracoid
90
Coracobrachialis attachment
middle third of medial surface of humerus
91
Coracobrachialis action
- flexes arm - adducts arm - stabilizes GH joint
92
Coracobrachialis innveration
Musculocutanous (C5,C6,C7)

Anatomy (16 decks)

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