circulatory system anatomy Q4

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Questions and Answers

how can we generally diagnose aortic dissection in x-ray?

would suspect widened mediastinum in chest x-ray, that's ( 6cm upright) and (8cm supine).

what usually occurs before the aortic dissection?

thoracic aortic aneurysm.

what are the types of thoracic aortic aneurysm?

1- true aneurysm (saccular) one side. 2- true aneurysm (fusiform) both sides. 3- false aneurysm (extravascular connective tissue)

what's Vena comitantes?

two veins accompanying medium or small artery ( in limb extremities) eg..brachial artery. larger arteries have single vein similar to their size. Signup and view all the answers

what are the functions of vena comitantes?

<ul> <li> countercurrent heat exchanger; warm arterial blood warms the cooler venous blood before it returns to the heart. </li> <li> arteriovenous pump; atrial contraction would propels venous blood/aid venous return. </li> </ul> Signup and view all the answers

what do the brachiocephalic veins drain?

upper limb (head, brain , and neck. Signup and view all the answers

what does azygous vein drain?

thorax and visor viscera within mediastinum. Signup and view all the answers

list the major veins in the SVC?

brachiocephalic v R/L subclavian v R/L external jugular R/L internal jugular R/L azygos v (R) Hemiazygos v (L) above diaphragm accessory hemiazygos v (kinda parallel to azygous v, above hemiazygos v) Signup and view all the answers