CV Lung Physiology II – Quiz

CV & Lung Physiology I – Quiz

Regarding the exchange of water in the capillary barrier, it is true that: A. The capillary colloid osmotic pressure promotes absorption. B. The capillary hydrostatic pressure enhances the absorption. C. The interstitial colloid osmotic pressure promotes absorption. D. All of the above are correct.

Activation of the sympathetic nervous system in the heart produces: A. An increase in cardiac output. B. A decrease in heart rate. C. A decrease in stroke volume. D. A decrease in cardiac contractility.

According to the relationship between flow, pressure and resistance, we can say that : A.If the viscosity increases, the flow will increase. B. If the pressure decreases, the flow will increase. C. An increase in the caliber of the vessel will decrease the flow. D. A decrease in the resistance will increase the flow.

Which of the following stimuli may induce vasodilation and increased tissue perfusion in the systemic circulation? A. Decreased pO2 and pCO2. B. Decreased pO2 and increased pCO2. C. Increased pO2 and decreased pCO2. D. Increased pO2 and pCO2.

The excitation of the carotid and aortic baroreceptors as a result of a sudden increase in blood pressure, triggers a reflex that restores normal blood pressure. Indicate which of the following responses occurs in the development of this reflex: A. Decrease of heart rate. B. Decrease of the strength of cardiac contraction. C. Vasodilation by decreased sympathetic stimulation. D. The remaining options are correct.

Which of the following drugs could reduce blood pressure? A. B. C. D.

An ACE inhibitor. An aldosterone activator. An antidiuretic drug. An sympathetic agonist.

It is true that: A. The surfactant protein increases the surface tension of the alveoli. B. The majority of the oxygen is transported dissolved in the blood plasma. C. Alveoli have a thin layer of smooth muscle. D. Most of the carbon dioxide is transported in blood as bicarbonate.

In comparison with atmospheric air, alveolar air contains: A. Increased proportion of O2. B. Increased proportion of CO2. C. Lower proportion of H2O. D. Increased proportion of N2.

Which of the following situations may increase the amount of O2 unloaded by hemoglobin in peripheral tissues? A. A decreased production of cellular CO2. B. A decrease of temperature. C. A decrease in pH. D. An Increased pO2 in the tissues.

Which of the following situations stimulates pulmonary ventilation? A. An increase in blood pH. B. An increase in the partial pressure of blood O2. C. A reduction in the partial pressure of blood CO2. D. An increase in the partial pressure of blood CO2.