Cardiovascular System — Flashcards

Flashcard 81: A(n) _____ in TPR causes a clockwise rotation of the vascular function curve

Answer: increase

Extra: An increase in Total Peripheral Resistance (TPR) increases the resistance to venous return, decreasing the slope of the vascular function (venous return) curve. This results in a clockwise rotation around the X-intercept (Mean Systemic Filling Pressure). Conversely, a decrease in TPR causes a counterclockwise rotation.

Flashcard 82: _____ is released from ventricular myocytes in response to increased tension

Answer: B-type (brain) natriuretic peptide (BNP)

Flashcard 83: Inspiration delays closure of the _____ valve which causes splitting of the S2 heart sound

Answer: pulmonic

Flashcard 84: Increased _____ results in an increased width and increased height on a pressure-volume loop curve

Answer: contractility

Flashcard 85: _____ is released from atrial myocytes in response to increased blood volume and atrial pressure

Answer: Atrial natriuretic peptide (ANP)

Flashcard 86: A(n) _____ in TPR causes a(n) downward shift of the cardiac function curve

Answer: increase

Flashcard 87: Increased _____ results in a(n) decreased width and increased height on a pressure-volume loop curve

Answer: afterload

Flashcard 88: Cerebral blood flow is autoregulated extremely well between arterial pressure limits of _____ and 140 mm Hg

Answer: 60

Flashcard 89: Type _____ respiratory failure is caused by hypoperfusion of respiratory muscles in patients with shock.

Answer: IV

Flashcard 90: Activation of A1 receptors in the myocardium by adenosine _____ outward K+ current

Answer: increases