Given an end-diastolic volume of 150 ml, an end-systolic volume of 50 ml, and a heart rate of 60 bpm, the cardiac output is a. 600 ml/min. b. 6 liters/min. c. 1200 ml/min. d. 3 liters/min.

Which of the following depolarizes next after the AV node? a. Atrial myocardium b. Ventricular myocardium c. Bundle branches d. AV bundle

Atrial repolarization coincides in time with the a. P wave. b. T wave. c. QRS wave. d. P-Q interval.

During atrial systole a. the atrial pressure exceeds ventricular pressure. b. 70 percent of ventricular filling occurs. c. the AV valves are open. d. valves prevent backflow into the great veins.

Which layer of the artery wall thickens most in atherosclerosis? a. Tunica media, b. Tunica intima, c. Tunica adventitia, d. Tunica externa.

Soon after the onset of ventricular systole, the a. AV valves close. b. semilunar valves open. c. first heart sound is heard. d. aortic pressure increases.

Use a calculator to give each value in decimal degrees. $\theta=\cot^{-1}(-0.60724226)f$

Use the formula for P(n,r) to evaluate each expression. P(4,0)

Atrial repolarization coincides in time with the a. P wave b. T wave c. QRS wave d. P-Q interval

Pulmonary veins deliver freshly oxygenated blood from the lungs to the a. right ventricle. b. left ventricle. c. right atrium. d. left atrium.

The base of the heart is its ____ surface. a. diaphragmatic, b. superior, c. anterior, d. inferior.

If an Rh− mother becomes pregnant, when can hemolytic disease of the newborn not possibly occur in the child? a. If the child is Rh−, b. If the child is Rh+, c. If the father is Rh+, d. If the father is Rh−.

Calculate end-systolic volume if end-diastolic volume is 150 mL and stroke volume is 65 mL/beat.

Sickling of RBCs can be induced in a person with sickle cell anemia by a. blood loss. c. stress. b. vigorous exercise. d. fever.