FREE PHYSIOLOGY AND STUDY GAMES ABOUT WEEK 12

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FREE PHYSIOLOGY AND STUDY GAMES ABOUT WEEK 12

EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -30 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: The basic rhythm of the respiratory cycle of inspiration and expiration seems to be generated by the

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medullary rhythmicity area.Question 2: According to the law of partial pressures, the partial pressure of gas in a mixture of gases is

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directly related to the concentration of that gas in the mixture and to the total pressure of the mixture Question 3: During the respiratory cycle, intrapleural pressure is always less than alveolar pressure. This difference is called

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transpulmonary pressure Question 4: The volume of air exhaled normally after a typical inspiration is called _____ volume.

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Tidal

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

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carbaminohemoglobin Question 6: _____ law states that the volume of a gas is inversely proportional to its pressure.

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Boyle's Question 7: More than two-thirds of the carbon dioxide carried by blood is carried in the form of

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bicarbonate ions Question 8: What variations exist in the body to temporarily store or carry oxygen?

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Neuroglobin, myoglobin, and fetal hemoglobin Question 9: The forced expiratory volume test can determine the presence of respiratory obstruction by measuring the

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volume of air expired per second during forced expiration Question 10: Which term refers to the volume of inspired air that actually reaches, or "ventilates," the alveoli?

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alveolar ventilation Question 11: An obstructive lung disorder that is characterized by recurring spasms of the smooth muscles in the wall of the bronchial air passages is

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Asthma.Question 12: Which oxygen-binding protein helps move oxygen out of the blood and into muscle cells?

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Myoglobin

Question 13: An increase in carbon dioxide in the blood causes

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a drop in pH in the blood.Question 14: The amount of oxygen that diffuses into blood each minute depends on which factor?

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oxygen pressure gradient between alveolar air and incoming pulmonary blood, total functional surface area of the respiratory membrane, respiratory minute volume, and alveolar ventilation

Question 15: Hyperpnea means a(n)

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increase in breathing.Question 16: A right shift of the oxygen-hemoglobin dissociation curve due to increased partial pressure of carbon dioxide is also known as

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the Bohr effect.

Question 17: The ability of the lungs and thorax to stretch is referred to as

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compliance Question 18: When carbon dioxide dissolves in water, some of the carbon dioxide molecules associate with water to form

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carbonic acid Question 19: Oxygen enters blood from alveolar air because the partial pressure of alveolar air is

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greater than the partial pressure of incoming blood.

Question 20: Which structural feature facilitates oxygen diffusion from the alveolar air into the blood in lung capillaries?

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The alveolar and capillary walls are both very thin, The alveolar and capillary surfaces are both extremely large, The lung capillaries accommodate a large amount of blood at one time, and Each red blood cell comes close to alveolar air.Question 21: Spirometry is used to measure all of the following EXCEPT:

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Total lung capacity Question 22: The apparatus used to measure the volume of air exchanged in breathing is called a(n)

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Spirometer.Question 23: The exact amount of oxygen in blood depends mainly on the amount of

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Hemoglobin Question 24: The sensors that provide feedback information to the medullary rhythmicity area are the

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central chemoreceptors and peripheral chemoreceptors.Question 25: 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.

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chloride Question 26: The mechanism that produces pulmonary ventilation is one that establishes a gas pressure gradient between the

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atmosphere and the alveolar air