Hemodynamics — Flashcards

Flashcard 121: Mixed blood in the fetal IVC enters the _____

Answer: right atrium

Flashcard 122: ECF volume contraction produces a(n) _____ in capillary oncotic pressure (πC)

Answer: increase

Flashcard 123: A(n) increase in TPR causes a(n) _____ shift of the cardiac function curve

Answer: downward

Flashcard 124: When net fluid movement is out of the capillary into the interstitial fluid, it is called _____

Answer: filtration

Flashcard 125: How do aortic and ventricular pressure change during reduced ventricular ejection? _____

Answer: Decrease

Flashcard 126: cGMP stimulates _____, which dephosphorylates myosin and relaxes smooth muscle

Answer: myosin-light-chain phosphatase

Flashcard 127: The rate of gastric emptying is decreased primarily by _____ and H+ in the duodenum

Answer: fats

Flashcard 128: Endothelial cells prevent thrombosis by secreting _____, which converts plasminogen to plasmin

Answer: tissue plasminogen activator (tPA)

Flashcard 129: One finding in the Cushing reaction is hypertension, which is caused by increased _____ tone

Answer: sympathetic

Extra: The Cushing reflex (or reaction) is a physiological response to increased intracranial pressure (ICP), resulting in the Cushing triad: hypertension, bradycardia, and irregular respirations. Increased ICP results in compressed cerebral arterioles → cerebral ischemia → sympathetic activation → hypertension to maintain cerebral perfusion pressure (CPP = MAP - ICP).

Flashcard 130: What type of resistance is illustrated by the arrangement of blood vessels in systemic circulation? _____

Answer: Parallel resistance