Hemodynamics — Flashcards

Flashcard 141: How does increased efferent sympathetic firing (e.g. baroreceptor reflex) affect venoconstriction? _____

Answer: Increased venoconstriction

Flashcard 142: A(n) increase in TPR causes a(n) _____ rotation of the vascular function curve

Answer: clockwise

Extra: Vasoconstriction of arterioles decreases blood flow from the arteries to veins and back to the heart.

Flashcard 143: The velocity of shortening of cardiac muscle _____ as afterload increases

Answer: decreases

Flashcard 144: How do PCWP and preload change during distributive shock? _____

Answer: Decreased

Flashcard 145: ECF volume expansion produces a(n) _____ in capillary hydrostatic pressure (Pc)

Answer: increase

Flashcard 146: Activation of β1 adrenergic receptors on the cardiac myocytes causes _____ cardiac contractility

Answer: increased

Extra: Sketchy Pharmacology: Autonomics (Sympathomimetics)

Flashcard 147: _____ = TBV x (1 - HCT)

Answer: Plasma volume

Flashcard 148: Viscosity of blood depends mostly on _____

Answer: hematocrit

Flashcard 149: Angiotensin II affects baroreceptor function, limiting reflex _____ that would normally accompany its pressor effects

Answer: bradycardia

Extra: Other:

Flashcard 150: Thromboxane A2 is a vaso-_____

Answer: constrictor