FREE PHYSIOLOGY AND STUDY GAMES ABOUT CHAP 36

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37 EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -60 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: A drop in the body's production of carbonic anhydrase would hinder the

formation of:

Answer:

carbonic acid.Question 2: During inspiration, the expansion of the lungs causes:

Answer:

a decrease in alveolar pressure.Question 3: The amount of oxygen that diffuses into blood each minute depends on which factor?oxygen pressure gradient between alveolar air and incoming pulmonary blood total functional surface area of the respiratory membrane respiratory minute volume

Answer:

all of the above

Question 4: An obstructive lung disorder that is characterized by recurring spasms of the smooth muscles in the wall of the bronchial air passages is

Answer:

asthma.

Question 5: The compound formed when carbon dioxide combines with hemoglobin is

Answer:

carbaminohemoglobin Question 6: Which of the following helps determine the amount of oxygen that diffuses into the blood each minute?The total functional surface area of the respiratory membrane Alveolar ventilation The oxygen pressure gradient between alveolar air and incoming p

Answer:

All of the above help determine the amount of oxygen that diffuses into the blood each minute.Question 7: About 98.5% of the oxygen carried by systemic arterial blood is attached to:

Answer:

hemoglobin.Question 8: spirometry is used to measure all of the following EXCEPT:

Answer:

Total lung capacity Question 9: The exit of the bicarbonate ion from the red blood cell is balanced by the inward transport of another negative ion, chloride. This countertransport of negative ions is often called the _____ shift.

Answer:

chloride Question 10: Which of the following is not a means of transporting oxygen in the blood?

Answer:

Combined with the bicarbonate ion (HCO3-)

Question 11: The _____ represents the largest volume of air an individual can move in and out of the lungs.

Answer:

vital capacity Question 12: Vital capacity is defined as the:

Answer:

maximum volume of air that can be moved into and out of the lungs during forced respiration.

Question 13: Hyperpnea means a(n)

Answer:

increase in breathing.Question 14: The term used to describe the volume of air exchanged during normal inspiration

and expiration is:

Answer:

tidal volume.Question 15: The basic rhythm of the respiratory cycle of inspiration and expiration seems to be generated by the

Answer:

medullary rhythmicity area.Question 16: _____ law states that the volume of a gas is inversely proportional to its pressure.

Answer:

Boyle's Question 17: Excessive fluid in the pleural cavity would be most likely to cause:

Answer:

decreased vital capacity.Question 18: The major form by which carbon dioxide is transported in the circulatory system

is:

Answer:

as bicarbonate ions.

Question 19: Which term refers to the volume of inspired air that actually reaches, or "ventilates," the alveoli?

Answer:

alveolar ventilation Question 20: Which structural feature facilitates oxygen diffusion from the alveolar air into the blood in lung capillaries?The alveolar and capillary walls are both very thin.The alveolar and capillary surfaces are both extremely large.The lung capillaries ac

Answer:

All of these are correct Question 21: Which of the following is not a regulated process associated with the functioning of the respiratory system?

Answer:

Control of cell metabolism rate Question 22: Which of the following would have the greatest accelerating effect on the dissociation of oxygen from hemoglobin?

Answer:

Decreased PO2 and increased PCO2 Question 23: If the tidal volume of a given individual is 500 ml, then the anatomical dead space is approximately _____ ml.

Answer:

150 Question 24: Dalton law states that the partial pressure of a gas in a mixture of gases is _____ to the total pressure of the mixture.

Answer:

directly related to the concentration of that gas in the mixture and

Question 25: During inspiration, as the size of the thorax increases, the

Answer:

intrapleural and alveolar pressures decrease.