Muscles

Question 1

What is the origin of the Superficial pectoral muscle?

Answer 1

First two sternebrae

Question 2

What is the origin of the Deep pectoral muscle?

Answer 2

The ventral part of the sternum; caudal end of sternum

Question 3

What is the insertion of the Superficial pectoral muscle?

Answer 3

The entire crest of greater tubercle

Question 4

What is the innervation of the Superficial pectoral muscle?

Answer 4

Cranial pectoral nerves (C7, C8)

Question 5

What is the action of the Superficial pectoral muscle?

Answer 5

Adducts the forelimb

Question 6

What is the insertion of the Deep pectoral muscle?

Answer 6

Crest of greater tubercle & partly on lesser tubercle of the humerus

Question 7

What is the innervation of the Deep pectoral muscle?

Answer 7

Caudal pectoral nerves (C8, T1)

Question 8

What is the action of the Deep pectoral muscle?

Answer 8

Adducts the forelimb, draw limb caudally, flexes the shoulder joint

Question 9

What are the two parts of the Brachiocephalicus muscle?

Answer 9

Cleidobrachialis and Cleidocephalicus

Question 10

What is the origin of the Cleidobrachialis muscle?

Answer 10

Faint line of clavicular insertion (fibrous vestigial clavicle)

Question 11

What is the insertion of the Cleidobrachialis muscle?

Answer 11

Distal end of the cranial border of the humerus

Question 12

What is the action of the Cleidobrachialis muscle?

Answer 12

Protract the limb, extend the shoulder, draws the head and neck to the side

Question 13

What is the innervation of the Cleidobrachialis muscle?

Answer 13

Accessory nerve and ventral branches of cervical spinal nerves

Question 14

What is the origin of the Cleidocephalicus muscle?

Answer 14

Mid-dorsal fibrous cervical raphe

Question 15

What is the insertion of the Cleidocephalicus muscle?

Answer 15

Faint line of clavicular insertion

Question 16

What is the action of the Cleidocephalicus muscle?

Answer 16

Draw the head and neck to the side

Question 17

What is the innervation of the Cleidocephalicus muscle?

Answer 17

Accessory nerve

Question 18

What is the origin of the Omotransversarius muscle?

Answer 18

Transverse wing of the atlas

Question 19

What is the insertion of the Omotransversarius muscle?

Answer 19

Distal end of the spine of scapula

Question 20

What is the action of the Omotransversarius muscle?

Answer 20

Protract the limb also

Question 21

What is the innervation of the Omotransversarius muscle?

Answer 21

Accessory nerve

Question 22

What are the two parts of the Trapezius muscle?

Answer 22

Cervical and thoracic parts

Question 23

What is the origin of the Rhomboideus muscle?

Answer 23

Median raphe of the neck; spinous processes of the first seven thoracic vertebrae

Question 24

What is the action of the Rhomboideus muscle?

Answer 24

Elevates forelimb and draw scapula against trunck

Question 25

What is the innervation of the Rhomboideus muscle?

Answer 25

Ventral branches of the cervical and thoracic spinal nerves

Question 26

What is the origin of the Latissimus dorsi muscle?

Answer 26

Thoracolumbar fascia; spinous processes of the lumbar and T7/8

Question 27

What is the insertion of the Latissimus dorsi muscle?

Answer 27

Teres major tuberosity of the humerus

Question 28

What is the action of the Latissimus dorsi muscle?

Answer 28

Retraction of the forelimb, flex the shoulder joint

Question 29

What is the innervation of the Latissimus dorsi muscle?

Answer 29

Thoracodorsal nerve (C7, C8, T1)

Question 30

What is the origin of the Serratus ventralis muscle?

Answer 30

Serrated face of the scapula

Question 31

What is the action of the Rhomboideus muscle?

Answer 31

Elevates the forelimb and draws scapula against trunk

Question 32

What is the innervation of the Serratus ventralis muscle?

Answer 32

Ventral branches of cervical spinal nerves and long thoracic nerves

Question 33

What are the two parts of the Serratus ventralis muscle?

Answer 33

Serratus ventralis cervicis (cranial) and Serratus ventralis thoracis (caudal)

Question 34

What is the action of the cranial part of the Serratus ventralis muscle?

Answer 34

Retractor of the forelimb

Question 35

What is the action of the caudal part of the Serratus ventralis muscle?

Answer 35

Protractor of the forelimb; also supports the trunk, depresses the scapula