Rutgers Functional Human Anatomy Lab 4 (Thoracic Arteries/Veins & Posterior Body Wall Drainage)

Aorta

Ascending, Arch, Descending

What branches off the aortic arch?

- brachiocephalic trunk

- left common carotid artery

- left subclavian artery

What branches off the brachiocephalic trunk?

- right subclavian artery

- right common carotid artery

what do the r & l common carotid arteries separate into?

- r & l external carotid artery (anterior) (split to facial & superficial arteries)

-r & l internal carotid artery (posterior) ( emerges posterior of optic nerve)

what muscles goes over the subclavian arteries and what nerve is attached to it?

anterior scalene muscle & phrenic nerve (innervates the diaphragm)

3 arteries that branch off the r & l subclavian arteries?

superior of artery:

- r & l vertebral artery (medial, supplies brain)

- r & l thyrocervical trunk (splits into 3 arteries)

inferior of artery:

- r & l internal thoracic artery (continue on underside of sternum)

3 arteries that branch off the r & l thyrocervical trunk?

r & l

- inferior thyroid artery

- transverse cervical artery

- suprascapular artery

anterior intercostal arteries

branches off internal thoracic artery between the ribs

r & l subclavian artery becomes

r & l axillary artery

superior and inferior vena cava location

superior vena cava splits into?

r & l brachiocephalic vein

inferior to brachiocephalic vein

r & l internal thoracic vein

(next to the internal thoracic artery on the underside of the sternum)

r & l brachiocephalic vein separate into?

r & l

- internal jugular vein (medial)

- external jugular vein

- subclavian (lateral)

posterior body wall drainage

azygos vein (on the right from the superior vena cava)

2 veins on the left side of the aorta

- accessory hemiazygos (superior)

- hemiazygos (inferior)

- both under descending aorta

name change of azygos and hemiazygos once passing the diaphragm

- azygos turns into right ascending lumbar vein- hemiazygos turns into left ascending lumbar vein

what are the veins coming off r & l ascending lumbar veins

- r & l lumbar veins

what does the descending aorta name change once passing the diaphragm?

abdominal aorta