Muscles Flashcards Preview

Forelimb > Muscles > Flashcards

Flashcards in Muscles Deck (33)
Loading flashcards...
0

Shoulder flexors

Latissimus dorsi
Deltoideus
Teres major
Triceps - long head

1

Shoulder extensors

Biceps brachii
Brachiocephalicus

2

Elbow extensors

Triceps

3

Elbow flexors

Biceps brachii
Brachialis

4

Carpus extensors

Extensor carpi radialis
Extensor carpi ulnaris

5

Digit extensors

Common digital extensor
Lateral digital extensor

6

Carpus flexors

Flexor carpi radialis
Flexor carpi ulnaris

7

Digits flexors

Superficial digital flexor
Deep digital flexor

8

Trapezius
Origin..
Insertion..
Action..

2 parts
1.cervical o- median raphe of neck
I- scapula spine

2. Thoracic o- supraspinous ligament of thoracic vertebrae
I- proximal third of scapula spine

A- protraction of scapula

9

Omotransversarius
Origin..
Insertion..
Action..

O- cervical vertebrae
I- scapula spine and acromion
A- protraction of limb

10

Rhomboideus
Origin..
Insertion..
Action..

2 parts
1. Cervical part o- median raphe of neck

2. Thoracic part o- spinous processes 4th to 7th vertebrae

I- dorsal border of scapula
A- elevate limb

11

Serratus ventralis
Origin..
Insertion..
Action..

O- last 5 vertebral vertebrae
I- facies serrata of the scapula
A- retractor of the limb

12

Brachiocephalicus
Origin..
Insertion..
Action..

Brachiocephalicus
3 parts:
Proximal to clavicle are
Cleidomastoideus from the head
Cleidocervicalis from the neck
Collectively cleidocephalicus

Distal to clavicle
Cleidobrachialis runs to humerus

A- protract the limb

13

Superficial pectoral
Origin..
Insertion..
Action...

O-cranial end of sternum
I- major tubercle of humerus
A- adducts the limb

14

Deep pectoral
Origin..
Insertion..
Action..

O- entire length of sternum
I- Minor tubercle of humerus
A- retract and adduct the limb

15

Deltoideus
Origin..
Insertion..
Action..

2 parts
O- spine of scapula
O- acromial process of scapula
I- deltoid tuberosity
A- flexor of shoulder

16

Triceps
Origin..
Insertion..
Action..

1. Long head
O- caudal border of scapula
I- olecranon tuber
A-extend and flex shoulder

2.lateral head
O-triceptial line of humerus
I- olecranon tuber
A- extend elbow

3.accessory head
4. Medial head
O- proximal third of humerus
I- form common tendon and insert on olecranon process
A- extend elbow

17

Supraspinatus
Origin..
Insertion..
Action..

O- supraspinatous fossa
I- major tubercle humerus
A- extension of shoulder

18

Infraspinatus
Origin..
Insertion..
Action..

O- infra spinous fossa
I- just distal to greater tubercle of humerus
A- flex or extend shoulder depending on limb position

19

Teres minor
Origin..
Insertion..
Action..

O- caudal edge of scapula
I- proximal to deltoid tuberosity
A-shoulder joint capsule muscle

20

Subscapularis
Origin..
Insertion..
Action..

O- sub scapular fossa
I- by short tendon on minor tubercle of. Humerus
A- extends shoulder joint

21

Teres major
Origin..
Insertion..
Action..

O- caudal edge of humerus
I- medial humerus
A- shoulder flexor

22

Biceps brachii
Origin..
Insertion..
Action..

O- by long tendon on supraglenoid tuberosity
I- by way of 2 tendons onto the radius and ulna
A- flexor of elbow
Extensor of shoulder

23

Brachialis
Origin..
Insertion..
Action..

O- proximal caudal humerus
I- proximal ulna
A- flexor of elbow

24

Extensor carpi radialis
Origin..
Insertion..
Action..

O- lateral distal humerus
I- carpal bones
A- extensor or carpus
Flexor of elbow

25

Common digital extensor
Origin..
Insertion..
Action..

O- lateral epicondyle of humerus
I- distal phalanges of digits 2 to 5
A- extends carpus and digits 2 to 5

26

Lateral digital extensor
Origin..
Insertion..
Action..

O- proximal radius and ulna
I- distal phalanges of digits 3,4 and 5
A- extension of digits 3,4 and 5

27

Ulnaris lateralis
Origin..
Insertion..
Action..

O- lateral epicondyle of humerus
I- proximal end of metacarpal 5
A- extension or flexion of carpus depending on position of limb

28

Supinator
Origin..
Insertion..
Action..

O- lateral collateral ligament and lateral epicondyle of humerus
I- cranial surface of radius
A- rotation of paw so Palmer surface faces medially

29

Flexor carpi radialis
Origin..
Insertion..
Action..

O- medial epicondyle
I- Palmer aspect of metacarpals 2 and 3
A- flexor of carpus

30

Superficial digital flexor
Origin..
Insertion..
Action..

O-medial epicondyle of humerus
I- Palmer proximal edge of middle phalanx all digits
A- flexor of digits

31

Flexor carpi Ulnaris
Origin..
Insertion..
Action..

2 heads
1. O- weaker head from proximal ulna
2. O- strong head from medial epicondyle humerus
I- accessory carpal bone
A-flexor of carpus

32

Deep digital flexor
Origin..
Insertion..
Action..

3 heads
Humeral head o- medial epicondyle of humerus
Radial head o- medial border of radius
Ulnar head o- caudal border of ulna
All heads unite to form the strong tendon which then splits and
I- distal phalanges of all digits
A- flexor of digits