Muscles (Insertion/Origin/Etc.) Flashcards Preview

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Flashcards in Muscles (Insertion/Origin/Etc.) Deck (14)
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1
Q

Which of the two superficial pectoral muscles is smaller?

A

descending pectoral

2
Q

Which of the two superficial pectoral muscles is more superficial than the other?

A

descending pectoral

3
Q

What is the origin of the descending pectoral muscle?

A

first sternebrae

4
Q

What is the insertion of the descending pectoral muscle?

A

greater tubercle of humerus

5
Q

What is the origin of the transverse pectoral?

A

first 2-3 sternebrae

6
Q

What is the insertion of the transverse pectoral?

A

crest of the greater tubercle of the humerus

7
Q

What are the two superficial pectoral muscles?

A

descending and transverse pectoral

8
Q

What is another name for the deep pectoral?

A

ascending pectoral

9
Q

What is the action of the superficial pectoral muscles?

A

adduct front limb/prevent abduction

10
Q

What innervates the cranial pectoral muscles?

A

C7/C8 spinal nerve, ventral branch

11
Q

What is the origin of the deep pectoral muscle?

A

ventral sternum, deep fascia near xiphoid process

12
Q

What is the insertion of the deep pectoral muscle?

A

lesser tubercle of the humerus, aponeurosis to greater tubercle/crest, caudal medial brachial fascia

13
Q

What is the action of the deep pectoral muscle?

A

extends/flexes shoulder joint, adducts the front limb

14
Q

What innervates the deep pectoral muscle?

A

C8, T1 caudal pectoral nerves