Anterior Axio-Appendicular Muscles

Question 1

Pectoralis Major

Answer 1

O:
- medial 1/2 of clavicle
- costal cartilage of ribs 1-6
- sternum
- anterior rectus sheath
I:
- crest of greater tubercle
N:
- lateral + medial pectoral nerves
A:
- draws scapula anteroinferiorly
- ADD
- IR
- Flexion
- Extension

Question 2

Pectoralis minor

Answer 2

O:
- costal cartilage of ribs 3-5
I:
- coracoid process
N:
- medial pectoral
A:
- draws scapula anteroinferiorly
- stabilize scapula on thoracic wall

Question 3

subclavius

Answer 3

O:
- costal cartilage
- sternal end of rib 1
I:
- anteroinferior middle 1/3 of clavicle
N:
- subclavian nerve
A:
- anchors + depresses clavicle

Question 4

serratus anterior

Answer 4

O:
- ribs 1-9
- intercostal fascia
I:
- medial border of scap
N:
- long thoracic
A:
- protraction
- keeps scapula on thoracic wall
- upward rotation