Neurovasculature Of Back

Question 1

Transverse Cervical Artery

Answer 1

Highly Variable

Superficial branch- deep to trapezius m.

Deep branch- dorsal scapular a.

Question 2

Dorsal Scapular Artery

Answer 2

From subclavian a. (Usually)

Passes through trunks of brachial plexus

Supplies lavatory scapulae and rhomboid mm.

Runs with dorsal scapular n.

Question 3

Thoracodorsal Artery

Answer 3

One of two terminal branches of subscapular a.

Supplies latissimus dorsi m.

Runs with thoracodorsal n.

Question 4

Posterior intercostal Artery

Answer 4

From descending thoracic aorta

Dorsal cutaneous branches- Supply deep back mm.

Question 5

Occipital Artery

Answer 5

From external carotid artery

Supplies posterior scalp and Suboccipital mm.

Question 6

Vertebral Artery

Answer 6

From subclavian a.

Enters neck at C6

Passes superiority through transverse foramina

Exits at C1

Supplies Suboccipital region

Enters foramen magnum to help form Circle of Willis