Axio-Appendicular Muscles: Anterior

Question 0

Pectoralis Major: Insertion

Answer 0

Lateral lip of intertubercular sulcus of humerus

Question 1

Pectoralis Major: Origin of Sternal Head

Answer 1

Sternal head:
Anterior surface of sternum
Aporneurosis of external oblique
Superior 6 costal cartilages

Question 2

Pectoralis Major: Innervation

Answer 2

Medial and Lateral Pectoral Nerves

C5, C6, C7, C8, T1

Question 3

Pectoralis Major: Action

Answer 3

Adducts and medially rotates shoulder joint

Question 4

Pectoralis Minor: Origin

Answer 4

3rd-5th ribs near coastal cartilages

Question 5

Pectoralis Minor: Insertion

Answer 5

Medial border, Superior surface of corocoid process of scapula

Question 6

Pectoralis Minor: Innervation

Answer 6

Medial pectoral nerve

C8, T1

Question 7

Subclavius: Origin

Answer 7

Junction of 1st rib and it’s costal cartilage

Question 8

Subclavius: Insertion

Answer 8

Inferior surface of middle 3rd of clavicle

Question 9

Subclavius: Innervation

Answer 9

Subclavian nerve

C5, C6

Question 10

Subclavius: Action

Answer 10

Anchors and depresses clavicle

Question 11

Serratus Anterior: Origin

Answer 11

External surface of lateral 1-8 ribs

Question 12

Serratus Anterior: Insertion

Answer 12

Anterior Medial border of scapula

Question 13

Serratus Anterior: Innervation

Answer 13

Long Thoracic Nerve

C5, C6, C7

Question 14

Serratus Anterior: Action

Answer 14

Rotates scapula

Protracts scapula and holds against thoracic wall

Question 15

Pectoralis Minor: Action

Answer 15

Stabilizes scapula by drawing inferiorly and anteriorly against thoracic wall

Question 16

Action of Clavicular head of Pec Major?

Answer 16

Flexes shoulder joint

Question 17

Action of Sternal head of Pec Major?

Answer 17

Extend shoulder joint from flexed position

Question 18

Pectoralis Major: Origin of Clavicular Head

Answer 18

Clavicular head:

Anterior medial half of clavicle