intrinsic muscles of the forelimb Flashcards
1
Q
what intrinsic muscles are in the lateral scapula and shoulder
A
deltoideus
infraspinatus
teres minor
supraspinatus
2
Q
origin of the deltoideus
A
spine of the scapula and acromion process of the scapula
3
Q
insertion of the deltoideus
A
deltoid tuberosity of humerus
4
Q
innervation of the deltoideus
A
axillary nerve
5
Q
function of the deltoideus
A
flexes the shoulder
6
Q
origin of the infraspinatus
A
infraspinous fossa
7
Q
insertion of the infraspinatus
A
greater tubercle of humerus
8
Q
innervation of the infraspinatus
A
suprascapular
9
Q
action of the infraspinatus
A
extends and flexes the shoulder
10
Q
origin of the teres minor
A
infraglenoid tubercle and distal third of the caudal border of the scapula
11
Q
insertion of the teres minor
A
teres minor tuberosity of the humerus
12
Q
innervation of the teres minor
A
axillary nerve
13
Q
function of the teres minor
A
flexes the shoulder also rotate shoulder laterally and prevent medial rotation during weight bearing
14
Q
origin of the supraspinatus
A
supraspinous fossa
15
Q
insertion of the supraspinatus
A
greater tubercle of the humerus via the thick tendon
16
Q
innervation of the supraspinatus
A
suprascapular nerve
17
Q
function of the supraspinatus
A
extends and stabilizes shoulder
18
Q
what are the muscles in the medial scapula and shoulder
A
subscapularis
teres major
coracobrachialis
19
Q
origin of the subscapularis
A
subscapular fossa of the scapula
20
Q
insertion of the subscapularis
A
lesser tubercle of the humerus
21
Q
innervation of the subscapularis
A
axillary and subscapular
22
Q
function of the subscapularis
A
extends, adducts and medially stabilizes the shoulder
23
Q
origin of the teres major
A
caudal border and angle of the scapula
24
Q
insertion of the teres major
A
teres major tuberosity of the humerus
25
innervation of the teres major
axillary
26
function of the teres major
flexes the shoulder, allows medial rotation and prevents lateral rotation of the shoulder
27
origin of the coracobrachialis
coracoid process of the scapula
28
insertion of the coracobrachialis
lesser tubercle of the humerus
29
innervation of the coracobrachialis
musculotcutaneous nerve
30
function of the coracobrachialis
extends shoulder and adducts limb and stabilises the shoulder.
31
what are the muscles in the caudal arm
tensor fasciae antebrachii
triceps brachii - has 4 heads:
long head
lateral head
accessory head
medial head
anconeus
32
origin of the tensor fasciae antebrachii
fascia covering the lateral side of the lattissmus dorsi
33
insertion of the tensor fasciae antebrachii
olecranon
34
innervation of the tensor fasciae antebrachii
radial nerve
35
function of the tensor fasciae antebrachii
extends the elbow
36
origin of the long head of the triceps brachii
caudal border of scapula
37
insertion of the long head of the triceps brachii
olecranon tuber
38
innervation of the long head of the triceps brachii
radial n
39
function of the long head of the triceps brachii
extends elbow and flexes shoulder
40
origin of the lateral head of the triceps brachii
deltoid tuberosity/tricipital line of humerus
41
insertion of the lateral head of the triceps brachii
olecranon tuber
42
innervation of the lateral head of the triceps brachii
radial
43
function of the lateral head of the triceps brachii
extends elbow
44
origin of the accessory head of the triceps brachii
neck of the humerus
45
insertion of the accessory head of the triceps brachii
olecranon tuber
46
innervation of the accessory head of the triceps brachii
radial nerve
47
function of the accessory head of the triceps brachii
extends elbow
48
origin of the medial head of the triceps brachii
proximal humerus near teres major tuberosity
49
insertion of the medial head of the triceps brachii
olecranon tuber
50
innervation of the medial head of the triceps brachii
radial
51
function of the medial head of the triceps brachii
extends elbow
52
origin of the anconeus
supracondylar crest and lateral and medial epicondyles of humerus
53
insertion of the anconeus
lateral olecranon
54
innervation of the anconeus
radial
55
function of the anconeus
extends elbow
raises joint capsule to prevent capsules compression during extension of elbow.
56
what are the muscles in the cranial arm
biceps brachii
brachialis
57
origin of the biceps brachii
supraglenoid tubercle
58
insertion of the biceps brachii
cranial aspect of proximal medial radius/ulna
59
innervation of the biceps brachii
musculocutaneous
60
function of the biceps brachii
extends shoulder and flexes elbow
61
origin of the brachialis
proximal lateral surface of the humerus
62
insertion of the brachialis
proximal medial radius/ulna
63
innervation of the brachialis
musculocutaneous
64
function of the brachialis
flexes elbow
65
what are the muscles in the cranial and lateral forearm
extensor carpi radialis
common digital extensor
lateral digital extensor
ulnaris lateralis
supinator
abductor digiti longus
66
origin of the extensor carpi radialis
lateral supracondylar crest of the humerus
67
insertion of the extensor carpi radialis
proximodorsal surface of metacarpal ii and iii
68
innervation of the extensor carpi radialis
radial
69
function of the extensor carpi radialis
extends carpus
70
origin of the common digital extensor
lateral epicondyle of the humerus
71
insertion of the common digital extensor
extensor processes of the distal phelanges if ii, iii, iv and v digits
72
innervation of the common digital extensor
radial
73
function of the common digital extensor
extends carpus and digits
74
origin of the lateral digital extensor
lateral epicondyle of the humerus
75
insertion of the lateral digital extensor
proximal end of all phalanges of digits ii,iv and v
76
innervation of the lateral digital extensor
radial
77
function of the lateral digital extensor
extends capus and joints of digits iii, iv and v
78
origin of the ulnaris lateralis
lateral epicondyle of the humerus
79
insertion of the ulnaris lateralis
accessory carpal bone and lateral aspect of metacarpal iv
80
innervation of the ulnaris lateralis
radial
81
function of the ulnaris lateralis
abduct the carpal joint also flex the carpal joints and supports carpus when extended.
82
origin of the supinator
lateral epicondyle of the humerus
83
insertion of the supinator
proximonocranial surface of radius
84
innervation of the supinator
radial
85
function of the supinator
rotates forearm laterally and flexes the elbow
86
origin of the abductor digiti longus
craniolateral surface of the ulna
87
insertion of the abductor digiti longus
proximal end of metacarpal i and ii
88
innervation of the abductor digiti longus
radial
89
function of the abductor digiti longus
extends the carpus
abducts the first digit or pollex
90
what muscles are in the caudal and medial forearm
pronator teres
flexor carpi radials
superficial digital flexor
flexor carpi ulnaris - humeral and ulnar head
deep digital flexor - humeral, ulnar and radial
pronator quadratus
interosseous
91
origin of the pronator terres
medial epicondyle of the humerus
92
insertion of the pronator teres
proximal medial border of the radius
93
innervation of the pronator teres
median nerve
94
function of the pronator teres
rotate the forearm medially also flexes the elbow
95
origin of the flexor carpi radialis
medial epicondyle of the humerus
96
insertion of the flexor carpi radialis
palmar aspect of the metacarpals ii and iii
97
innervation of the flexor carpi radialis
median nerve
98
function of the flexor carpi radialis
flexes the carpus
99
origin of the superficial digital flexor
medial epicondyle of the humerus
100
insertion of the superficial digital flexor
palmar aspect of the middle phalanx on all digits
101
innervation of the superficial digital flexor
median nerve
102
function of the superficial digital flexor
extends elbow, flexes carpus and flexes digit
103
origin of the flexor carpi ulnaris - humeral head
medial epicondyle of the humerus
104
insertion of the flexor carpi ulnaris - humeral head
accessory carpal bone
105
innervation of the flexor carpi ulnaris - humeral head
ulnar nerve
106
function of the flexor carpi ulnaris - humeral head
flexes the carpus
107
origin of the flexor carpi ulnaris - ulnar head
caudo medial border of the olecranon
108
insertion of the flexor carpi ulnaris - ulnar head
accessory carpal bone
109
innervation of the flexor carpi ulnaris - ulnar head
ulnar nerve
110
function of the flexor carpi ulnaris - ulnar head
flexes the carpus
111
origin of the deep digital flexor - humeral head
medial epicondyle of the humerus
112
insertion of the deep digital flexor - humeral head
flexor surface of the distal phalanx (3rd)
113
innervation of the deep digital flexor - humeral head
median and ulnar
114
function of the deep digital flexor - humeral head
extends elbow and flexes carpus and digit
115
origin of the deep digital flexor - ulnar head
proximal caudal border of the ulna
116
innervation of the deep digital flexor - ulnar head
ulnar
117
origin of the deep digital flexor - radial head
medial border of the radius
118
innervation of the deep digital flexor - radial head
median
119
origin of the pronator quadratus
fills space between radius and ulna
120
insertion of the pronator quadratus
apposed surface of the radius and ulna
121
innervation of the pronator quadratus
median
122
function of the pronator quadratus
pronate the paw
123
origin of the interosseous
base of respective metacarpal bone (ii,iii,iv and v)
124
insertion of the interosseous
metacarpophalangeal joint
125
innervation of the interosseous
deep branch of ulnar nerve
126
function of the interosseous
flexes metacarpophalangeal joints, fetlock (ii,iii,iv and v)
