Scapula lateral rotators

Question 1

Trapezius

Answer 1

O: *medial third of superior nuchal line

 * External occipital protuberance
 * Ligamentum nuchae 
 * Spinous processes
 * Supraspinous ligaments of C7-T12

I: Upper fibres- posterior border of lateral third of clavicle
Middle fibres- *medial border of acromion *Superior lip of crazy of spine scapula
Lower fibres - tubercle at medial end of spine of scapula

D:

A:upper fibres- elevate scapula
Middle fibres- retract scapula
Upper and Lower fibres together- laterally rotate scapula, extend and laterally flexes head and neck

N: accessory nerve (6), ventral rami (C3,4)

Question 2

Serratus anterior

Answer 2

O: Outer surface and superior borders of upper eight, nine or ten ribs and intervening intercostal fascia

I: Costal surface of medial border of scapula

D

A: Protracts and laterally rotates scapula

N: long thoracic nerve (C5-C7)