Pectoral Muscles (anterior axioappendicular)

Question 1

O: medial half of clavicle, ant surface of sternum , costal cartilages of ribs 1-6

I: lateral lip of intertubercular groove

A: arm adduction, arm internal rotation, arm flexion, arm extension

FD: lateral

Answer 1

Pectoralis major

Question 2

O: ribs 3-5

I: coracoid process

A: elevates the ribs 3-5, pulls your scapula anteriorly (punching mm)

FD: lateral

Answer 2

Pectoralis minor

Question 3

O: subclavian groove of clavicle

I: 1st rib

A: elevate the 1st rib, stabilizes the clavicle to rib

Fd: sup

Answer 3

Subclavius

Question 4

O: lateral borders of ribs 1-8

I: medial border of ant surface os scapula

A: protracts, abduct scapula elevate ribs 1-8

Fd

Answer 4

Serratus anterior