EXAM 3 BIO 251

At high concentrations of ADH, the extent of water reabsorption in the collecting duct is _______, thus causing urine output to ____________ A) high: decrease B) low : decrease C) high: increase D) Low: increase E) unaffected: remain unchanged A) high: decrease An increase in the volume of blood ejected from the heart, with no change in total peripheral resistance, would A) elevate MAP B) elevate central venous pressure C) reduce MAP D) elevate pulmonary venous pressure E) reduce the stretch on the aorta A) Elevate MAP Which of the following would decrease MAP? A) increase in HR B) increase in venous system C) increase in stroke volume D) increase in total peripheral resistance E) increase arteriole diameter(vasodilation) E) increase arteriole diameter (vasodilation) Drugs that block angiotensin II activity, i.e. angiotensin receptor antagonists, would cause which of the following? A) Decreased MAP B) increased MAP C) decreased heart rate D) decrease in epinephrine release E) activation of the parasympathetic nervous system decreased MAP An increase in TPR, in the absence of any change in cardiac output would ______ A) reduce mean arterial pressure B) increase central venous pressure C) elevate MAP D) decrease pulmonary venous pressure E) reduce the stretch on the aorta C) elevate MAP Mean arterial pressure can by increased by all of the following EXCEPT A) increasing SV B) increasing parasympathetic activity to the heart C) increasing HR D) increasing sympathetic activity to the heart E) increasing TPR B) increasing