case 1 questions Flashcards
In normal circulation, which organ or vessel contains the largest volume of blood at any moment?
veins
what is the best description of the course of lymph drainage from the left bronchomediastinal trunk to the venous system?
Via the thoracic duct
which layer of the aortic wall contains concentrically arranged elastic lamellae
tunica media
which vessels constitute the microvascular bed of a tissue?
Capillaries, arterioles, and post capillary venules
When a person moves from a supine position to a standing position, which compensatory changes occurs?
increased heart rate
describe the position of the azygos vein
typically ascends through the aortic hiatus and drains into the superior vena cava at the level of T4
what physiological changes would be expected to occur in the capillary in response to decrease in arteriole diameter?
Decreased blood flow to the capillary bed, decreased capillary hydrostatic pressure, decreased capillary filtration rate.
what controls blood flow in the arterial system during diastole?
driven by the elastic recoil of the major arteries
which hormone has a direct effect on renal control of blood pressure?
aldosterone - steroid hormone that directly acts on the kidney to cause the reabsorption of sodium and water, and the secretion of potassium
which major branch of the abdominal aorta is responsible for supplying blood to the small intestine?
superior mesenteric artery
Select the statement that best describes an example of collateral circulation of arterial blood to the thoracic aorta in the event of coarctation of the aorta at the level of the ligamentum arteriosis
Brachiocephalic trunk (right), subclavian, internal thoracic, anterior intercostals, posterior intercostals, aorta
what would cause a rapid increase in the rate of activation of alpha-1 adrenergic receptors in peripheral arterioles?
waking suddenly and quickly standing upright
