Anterior Axioappendicular Muscles Flashcards Preview

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Flashcards in Anterior Axioappendicular Muscles Deck (16):
1

Pectoralis Major Origin-2

Clavicular head: Medial 1/2 of clavicle

Sternocostal head: Anterior surface of sternum, superior 6 costal cartilages, aponeurosis of external oblique

2

Pectoralis Major Insertion

Lateral lip of intertubercular sulcus of humerus

3

Pectoralis Major Innervation-2

Lateral (C5, C6, C7) and medial (C8, T1) pectoral nerves

Clavicular head- C5, C6
Sternocostal head- C7, C8, T1

4

Pectoralis Major Action-2

-Adducts & medially rotates humerus
-Draws scapula anteriorly and inferiorly

5

Pectoralis Minor Origin

3rd-5th ribs near costal cartilages

6

Pectoralis Minor Insertion

Medial border & superior surface of coracoid process

7

Pectoralis Minor Innervation

Medial Pectoral Nerve (C8, T1)

8

Pectoralis Minor Action

Stabilizes scapula by drawing inferiorly and anteriorly against thoracic wall

9

Subclavius Origin

Junction of 1st rib and its costal cartilage

10

Subclavius Insertion

Inferior surface of middle third of clavicle

11

Subclavius Innervation

Subclavian nerve (C5, C6)

12

Subclavius Action

Anchors and depresses clavicle

13

Serratus Anterior Origin

Lateral parts of 1st-8th ribs

14

Serratus Anterior Insertion

Anterior surface of medial border of scapula

15

Serratus Anterior Innervation

Long thoracic nerve (C5, C6, C7)

16

Serratus Anterior Action-2

-Protracts scapula and holds against thoracic wall
-Rotates scapula