anterior axio-appendicular muscles

Question 1

serratus anterior

Answer 1

O: anterolateral surface of upper 8 or 9 ribs
I: medial border of scapula, costal aspect
A: scapular abduction/upward rotation of scapula/functionally controls winging
I: long thoracic

Question 2

subclavius

Answer 2

O: first rib
I: inferior surface of clavicle
A: depresses and stabilizes clavicle
I: nerve to subclavius

Question 3

pectoralis major

Answer 3

O: medial clavicle/sternum/ribs 2-6
I: intertubercular groove (lateral lip)
A: shoulder adduction/shoulder internal rotation/horizontal adduction/shoulder flexion
I: medial and lateral pectoral

Question 4

pectoralis minor

Answer 4

O: anterior surface of ribs 3-5 near cartilage
I: coracoid process
A: scapular depression/anterior tilt of scapular/scapular abduction
I: medial pectoral