Lecture 4 - Muscles Flashcards Preview

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Flashcards in Lecture 4 - Muscles Deck (46):
1

What is the origin of the omotransversarius?

Distal end of spine of scapula

2

What is the insertion of the omotransversarius?

Transverse wing of the atlas

3

What is the nerve of the omotransversarius?

Accessory n.

4

What is the action of the omotransversarius?

Advance limb or flex neck laterally

5

What is the origin of the trapezius?

Nuchal ligament, supraspinous ligament

6

What is the insertion of the trapezius?

Spine of scapula

7

What is the nerve of the trapezius?

Accessory n.

8

What is the action of the trapezius?

Elevate shoulder, abduct shoulder, draws limb forward, fixes shoulder

9

What is the origin of the Brachiocephalis?

clavical intersection

10

What is the insertion of the cleidobrachialis?

Distal end of cranial border of humerus

11

What is the insertion of the cleidocephalis?

Cranial 1/2 of mid-dorsal raphe and mastoid process

12

What is the nerve of the Brachiocephalis?

Accessory n.

13

What is the action of the Brachiocephalis?

Advance forelimb, extend shoulder joint, draw head and neck laterally

14

What are the two parts of the brachiocephalis?

cleidobrachialis and cleidocephalicus

15

What are the parts of the rhomboideus?

thoracis, cervicis, and capitis

16

What is the origin of the thoracis?

Spinous process of first 7 thoracic vertebrae

17

What is the origin of the cervicis?

Median raphe of neck

18

What is the origin of the capitis?

Occipital bone and nuchal ligament

19

What is the nerve of the rhomboideus?

Ventral rami of C and T spinal n.

20

What is the insertion of the rhomboideus?

Dorsal border of scaplula

21

What is the action of the rhomboideus?

Elevate thoracic limb and draw scapula against trunk

22

What is the origin of the latissimus dorsi?

Thoracolumbar fascia

23

What is the insertion of the latissimus dorsi?

Teres major tuberosity (of humerus)

24

What is the nerve of the latissimus dorsi?

Thoracodorsal n.

25

What is the action of the latissimus dorsi?

Draw free limb caudally, flex shoulder joint

26

What is the origin of the superficial pectoral?

1st two sternebrae, fibrous raphe between adjacent muscles

27

What is the insertion of the superficial pectoral?

whole crest of greater tubercle of humerus

28

What is the nerve of the superficial pectoral?

Cranial pectoral n.

29

What is the action of the superficial pectoral?

Adducts limbs, functions to prevent abduction of limb when bearing weight

30

What is the origin of the deep pectoral?

Ventral part of the sternum

31

What is the insertion of the deep pectoral?

1. cranial part: lesser tubercle of humerus, w/ aponeurosis to greater tubercle
2. caudal part: medial brachial fascia

32

What is the nerve of the deep pectoral?

Caudal pectoral n.

33

What is the action of the deep pectoral?

Adducts limb

34

What is the action of the deep pectoral when limb is advanced and fixed?

pulls trunk cranially and extends shoulders

35

What is the action of the deep pectoral when limb is not bear weight?

draws limb caudally and flexes shoulder

36

What is the origin of the subclavius?

Cranial part of sternum

37

What is the insertion of the subclavius?

Epimysium of supraspinatus m.

38

What is the nerve of the subclavius?

Caudal/Cranial pectoral n.

39

What is the action of the subclavius?

Acts w/ deep and superficial pectoral muscles

40

What animal has a subclavius?

horse

41

What are the two regions of the serratus ventralis?

thoracis and cervicis

42

What is the origin of the thoracis?

Transverse processes of last C3-C7 vertebrae

43

What is the origin of the cervicis?

Ribs 2-7(8)

44

What is the insertion of the serratus ventralis?

Facies serrata on dorsomedial 1/3 of scapula

45

What is the nerve of the serratus ventralis?

Long thoracic nerve

46

What is the action of the serratus ventralis?

Depress scapula and support trunk