Posterior Axio-Appendicular Muscles

Question 1

Trapezius

Answer 1

O:
- nuchal line
- occipital protuberance
- nuchal ligament
- Spinous process C7-T12
I:
- lateral 1/3 clavicle
- spine of scap
- acromion
N:
- accessory nerve
A:
- retraction
- extension of head & neck
- ipsilateral rotation
- elevation
- depression

Question 2

Latissimus Dorsi

Answer 2

O:
- iliac crest
- spinous process T7-T12
- thoracolumbar fascia
- ribs 9-12
- inferior angle
I:
- interubercular sulcus
N:
- thoracodorsal
A:
- IR
- ADD
- Extension

Question 3

Levator Scapulae

Answer 3

O:
- transverse process C1-C4
I:
- Medial border of scap
N:
- Dorsal scapular
A:
- rotates glenoid cavity inferiorly
- draws scapula superomedially
- ipsilateral lateral flexion
- extension of neck

Question 4

Rhomboid major + minor

Answer 4

O:
- nuchal ligament
- spinous proces C7-T5
I:
- Spine of scap
- medial border of scap
N:
- dorsal scapular
A:
- draws scapula superomedially
- rotates glenoid cavity inferiorly
- supports position of scapula