Hemodynamics — Flashcards

Flashcard 351: How does exercise affect total peripheral resistance? _____

Answer: Decreased TPR

Flashcard 352: When a blood vessel is added to a system in series, the total resistance _____

Answer: increases

Flashcard 353: Abnormal secondary hemostasis may occur due to _____ failure, which causes decreased production of coagulation factors

Answer: liver

Flashcard 354: Velocity of blood (v) is _____ proportional to the total cross-sectional area

Answer: inversely

Flashcard 355: Which organ of the body has the most effective oxygen extraction?_____

Answer: Heart

Flashcard 356: The lateral area of the hypothalamus is stimulated by:

Answer: ghrelin

Flashcard 357: What does σ (sigma) represent in regards to capillary fluid exchange?

Answer: Reflection coefficient

Extra: The reflection coefficient (σ) is a value between 0 and 1 that describes the permeability of a membrane to a solute (usually plasma proteins). • σ = 1: The membrane is impermeable (100% reflection). • σ = 0: The membrane is completely permeable.

Flashcard 358: The velocity of shortening of cardiac muscle is maximal when afterload is _____

Answer: zero

Flashcard 359: The blood volume contained in the arteries is called the _____

Answer: stressed volume

Flashcard 360: Atrial natriuretic peptide generally causes _____ of arterioles

Answer: dilation