Medical Physiology 2 Test Bank
Chapter 1: Cardiovascular Physiology
MCQs:
1.
The Frank-Starling law of the heart states that an increase in ventricular filling
leads to:
a) Decreased stroke volume
b) Increased stroke volume
c) No change in cardiac output
d) Decreased heart rate
2.
1. Answer: b) Increased stroke volume
3.
The normal pacemaker of the heart is:
a) AV node
b) Purkinje fibers
c) SA node
d) Bundle of His
4.
1. Answer: c) SA node
5.
During which phase of the cardiac cycle does ventricular filling occur?
a) Isovolumetric contraction
b) Isovolumetric relaxation
c) Ventricular diastole
d) Ventricular systole
6.
1. Answer: c) Ventricular diastole
True/False:
1. The cardiac output is determined by stroke volume multiplied by heart rate.
(True)
2. The left ventricle pumps blood into the pulmonary circulation. (False, it
pumps into systemic circulation.)
Short Answer:
, Explain how baroreceptors regulate blood pressure.
Chapter 2: Respiratory Physiology
MCQs:
1.
The primary muscle responsible for inspiration is:
a) Intercostal muscles
b) Diaphragm
c) Abdominal muscles
d) Sternocleidomastoid
2.
o Answer: b) Diaphragm
3.
Oxygen and carbon dioxide exchange occurs in the:
a) Trachea
b) Bronchi
c) Alveoli
d) Pleura
4.
o Answer: c) Alveoli
5.
The primary factor that drives breathing under normal conditions is:
a) Oxygen levels
b) Carbon dioxide levels
c) pH levels
d) Nitrogen levels
6.
o Answer: b) Carbon dioxide levels
True/False:
1. Oxygen is transported in the blood primarily as dissolved gas. (False, it is
mostly bound to hemoglobin.)
2. The total lung capacity includes tidal volume, inspiratory reserve volume,
expiratory reserve volume, and residual volume. (True)
Chapter 1: Cardiovascular Physiology
MCQs:
1.
The Frank-Starling law of the heart states that an increase in ventricular filling
leads to:
a) Decreased stroke volume
b) Increased stroke volume
c) No change in cardiac output
d) Decreased heart rate
2.
1. Answer: b) Increased stroke volume
3.
The normal pacemaker of the heart is:
a) AV node
b) Purkinje fibers
c) SA node
d) Bundle of His
4.
1. Answer: c) SA node
5.
During which phase of the cardiac cycle does ventricular filling occur?
a) Isovolumetric contraction
b) Isovolumetric relaxation
c) Ventricular diastole
d) Ventricular systole
6.
1. Answer: c) Ventricular diastole
True/False:
1. The cardiac output is determined by stroke volume multiplied by heart rate.
(True)
2. The left ventricle pumps blood into the pulmonary circulation. (False, it
pumps into systemic circulation.)
Short Answer:
, Explain how baroreceptors regulate blood pressure.
Chapter 2: Respiratory Physiology
MCQs:
1.
The primary muscle responsible for inspiration is:
a) Intercostal muscles
b) Diaphragm
c) Abdominal muscles
d) Sternocleidomastoid
2.
o Answer: b) Diaphragm
3.
Oxygen and carbon dioxide exchange occurs in the:
a) Trachea
b) Bronchi
c) Alveoli
d) Pleura
4.
o Answer: c) Alveoli
5.
The primary factor that drives breathing under normal conditions is:
a) Oxygen levels
b) Carbon dioxide levels
c) pH levels
d) Nitrogen levels
6.
o Answer: b) Carbon dioxide levels
True/False:
1. Oxygen is transported in the blood primarily as dissolved gas. (False, it is
mostly bound to hemoglobin.)
2. The total lung capacity includes tidal volume, inspiratory reserve volume,
expiratory reserve volume, and residual volume. (True)
