PHYSIO EXAM 3 QUESTIONS AND
ANSWERS COMPLETE AND ACCURATE
RATED A.
A catheterized patient is found to have a left ventricular systolic pressure of 180
mmHg but an aortic systolic pressure of 110 mmHg. Which of the following is the
most likely explanation for this discrepancy?
Aortic valve stenosis
A. Skeletal muscle vascular resistance during increased sympathetic activity.
B. Renal (kidney) vascular resistance during increased sympathetic activity.
B>A
A. Cardioaccelerator center innervation of preganglionic cells in the thoracic
region of the spinal cord.
B. Cardioinhibitory center innervation of preganglionic cells in the thoracic region
of the spinal cord.
A>B
A. The time required for a RBC to traverse a pulmonary capillary during exercise.
B. The time required for a RBC to traverse a pulmonary capillary at rest.
B>A
A. Skeletal muscle arteriolar resistance in response to elevated blood pO2.
B. Skeletal muscle arteriolar resistance in response to elevated blood pCO2.
A>B
According to the Frank-Starling Law, stroke volume will increase if:
cardiac sarcomere length increases.
A. Right ventricular cardiac output.
B. Left ventricular cardiac output
, A=B
A. Blood flow velocity in the aorta.
B. Blood flow velocity in capillaries
A>B
A. Peak pulmonary arterial pressure.
B. Peak aortic pressure.
B>A
A. Volume of blood in systemic arteries.
B. Volume of blood in systemic veins
B>A
A. Erythrocyte density in the blood.
B. Leukocyte density in the blood.
A>B
A. Cardiac output at rest.
B. Cardiac output during moderate exercise
B>A
A. Volume of plasma in the blood.
B. Volume of cells in the blood
A>B
A. Total peripheral resistance.
B. Renal vascular resistance
B>A
A. Heart rate following activation of the CIC.
B. Heart rate following activation of the CAC
B>A
ANSWERS COMPLETE AND ACCURATE
RATED A.
A catheterized patient is found to have a left ventricular systolic pressure of 180
mmHg but an aortic systolic pressure of 110 mmHg. Which of the following is the
most likely explanation for this discrepancy?
Aortic valve stenosis
A. Skeletal muscle vascular resistance during increased sympathetic activity.
B. Renal (kidney) vascular resistance during increased sympathetic activity.
B>A
A. Cardioaccelerator center innervation of preganglionic cells in the thoracic
region of the spinal cord.
B. Cardioinhibitory center innervation of preganglionic cells in the thoracic region
of the spinal cord.
A>B
A. The time required for a RBC to traverse a pulmonary capillary during exercise.
B. The time required for a RBC to traverse a pulmonary capillary at rest.
B>A
A. Skeletal muscle arteriolar resistance in response to elevated blood pO2.
B. Skeletal muscle arteriolar resistance in response to elevated blood pCO2.
A>B
According to the Frank-Starling Law, stroke volume will increase if:
cardiac sarcomere length increases.
A. Right ventricular cardiac output.
B. Left ventricular cardiac output
, A=B
A. Blood flow velocity in the aorta.
B. Blood flow velocity in capillaries
A>B
A. Peak pulmonary arterial pressure.
B. Peak aortic pressure.
B>A
A. Volume of blood in systemic arteries.
B. Volume of blood in systemic veins
B>A
A. Erythrocyte density in the blood.
B. Leukocyte density in the blood.
A>B
A. Cardiac output at rest.
B. Cardiac output during moderate exercise
B>A
A. Volume of plasma in the blood.
B. Volume of cells in the blood
A>B
A. Total peripheral resistance.
B. Renal vascular resistance
B>A
A. Heart rate following activation of the CIC.
B. Heart rate following activation of the CAC
B>A
