Question

Question 46

The term ventilation refers to the

		cooling of the airways by respiration.
		mechanical process of moving air in and out of the lungs
		random movement of molecules from an area of high concentration to an area of lower concentration.
		oxygenation of blood as it travels through the lungs

Question 47

Erythropoietin supplementation results in

	A.	Increased cardiac workload due to increased viscosity
	B.	Increased o2 carrying capacity of blood
	C.	Both of the above
	D.	None of the above

Question 49

A person is taking a supplement that makes their “lungs robust and resistant to damage.” This agent is associated with thickening of the alveolar walls. You would expect

	A.	Improved pulmonary compliance
	B.	Improved conduction of gases
	C.	Reduced gas exchange
	D.	All of the above

Question 50

An agent that increases alveolar number woud

	A.	Increase O2 diffusion
	B.	Increase CO2 diffusion
	C.	All of the above

Question 51

Which of the following statements is NOT TRUE regarding the oxygen-hemoglobin dissociation curve?

	A.	The curve shifts to the right during exercise due to a decrease in pH.
	B.	The curve shifts to the right during exercise due to an increase in temperature.
	C.	The curve shifts to the left during exercise at altitude.
	D.	The steep portion of the curve represents a condition where small decreases in PO2 result in rapid offloading of O2 from hemoglobin, which occurs at the tissues.
	E.	The curve for oxygen-myoglobin dissociation looks different from this curve, because myoglobin’s affinity for O2 is greater than hemoglobin.