Chapter 4 Cardiovascular Function
1. In the arterial-venous circulatory system, pressure is inversely related to:
A) velocity.
B) volume.
C) tension.
D) viscosity.
2. Turbulent blood flow can be caused by a number of factors, including:
A) increased velocity.
B) short vessel length.
C) high blood viscosity.
D) layering of blood cells.
3. Heart muscle differs from skeletal muscle tissue by being able to generate:
, A) contractions.
B) calcium influx.
C) action potentials.
D) sarcomere binding.
4. During ventricular systole, closure of the atrioventricular (AV) valves
coincides with:
A) atrial chamber filling.
B) aortic valve opening.
C) isovolumetric contraction.
D) semilunar valves opening.
5. The difference between the end-diastolic and end-systolic volumes is the:
A) stroke volume.
B) cardiac output.
C) ejection fraction.
D) cardiac reserve.
6. Preload represents the volume work of the heart and is largely determined
by:
A) venous blood return.
B) vascular resistance.
C) force of contraction.
D) ventricular emptying.
7. A large increase in heart rate can cause:
A) increased blood viscosity.
B) loss of action potential.
C) decreased stroke volume.
1. In the arterial-venous circulatory system, pressure is inversely related to:
A) velocity.
B) volume.
C) tension.
D) viscosity.
2. Turbulent blood flow can be caused by a number of factors, including:
A) increased velocity.
B) short vessel length.
C) high blood viscosity.
D) layering of blood cells.
3. Heart muscle differs from skeletal muscle tissue by being able to generate:
, A) contractions.
B) calcium influx.
C) action potentials.
D) sarcomere binding.
4. During ventricular systole, closure of the atrioventricular (AV) valves
coincides with:
A) atrial chamber filling.
B) aortic valve opening.
C) isovolumetric contraction.
D) semilunar valves opening.
5. The difference between the end-diastolic and end-systolic volumes is the:
A) stroke volume.
B) cardiac output.
C) ejection fraction.
D) cardiac reserve.
6. Preload represents the volume work of the heart and is largely determined
by:
A) venous blood return.
B) vascular resistance.
C) force of contraction.
D) ventricular emptying.
7. A large increase in heart rate can cause:
A) increased blood viscosity.
B) loss of action potential.
C) decreased stroke volume.
