back miscellaneous

Question 1

list the branches of the subclavian artery:

Answer 1

thyrocervical branch
descending branch of transverse cervical artery and suprascapular
axillary artery (as it passes under and towards axilla)

Question 2

branches of the axillary artery:

Answer 2

subscapular artery (posterior) –> circumflex scapluar artery (as it moves anteriorly on lateral edge)
posterior circumflex humeral artery (wraps around humerus)

Question 3

anastamoses of the scapula:

Question 4

cause of a drooping shoulder blade:

Answer 4

trapezius paralysis
failure of the upper fibers to elevate the scapula

Question 5

borders of the triangle of auscultation:

Answer 5

lateral trapezius
medial scapula
superior latissimus dorsi

Question 6

borders of petit triangle/inferior lumbar triangle:

Answer 6

external oblique, latissimus dorsi, and iliac crest

site of abdominal hernias, pus may extrude from the abd wall and result in a extraabdominal lumbar abscess

Question 7

what does the thoracolumbar fascia serve as an attachment for?

Answer 7

latissimus dorsi

Question 8

name of fascia covering the lower back:

Answer 8

thoracolumbar fascia

Question 9

what are the insertion points for the thoracolumbar fascia:

Answer 9

anterior and middle - transverse processes of vertebral arches (internal)
posterior - tips of the spinous processes (visualized externally), continuous with the interspinous ligaments

Question 10

what do the dorsal rami innervate?

Answer 10

deep muscles of the back and adjacent skin