Question 1

During inspiration, contraction of the diaphragm causes the volume of Mr. Jones' thoracic cavity to increase and the pleural pressure to decrease. The pressure in his alveoli (Palv)  will

Accepted Answer

A)   decrease below atmospheric pressure (P
B)  , causing air to move out of his lungs.
B)   become greater than atmospheric pressure (P
B)  , causing air to move into his lungs.
C)   decrease below atmospheric pressure (P
B)  , causing air to move into his lungs.
D)   become greater than atmospheric pressure (P
B)  , causing air to move out of his lungs.
E)   does not change.F) A) and E)
G) B) and E)

Question 2

The volume of air inspired or expired with each breath is the

Accepted Answer

A)   residual volume.
B)   inspiratory reserve volume.
C)   tidal volume.
D)   expiratory reserve volume.E) A) and C)
F) A) and D)

Question 3

Match the term with the appropriate description, answer with the letter preceding the description.
-hard palate
"Enter the letter of the correct description below"

Accepted Answer

A)  the floor of the nasal cavity
B)  superior portion of pharynx
C)  a soft process that extends inferiorly from the posterior edge of the soft palate
D)  the opening of the nasal cavity into the pharynx
E)  external openings of the nasal cavityF) C) and D)
G) A) and B)

Question 4

When air passes through the glottis, which structures vibrate to produce sound?

Accepted Answer

A)   thyroid folds
B)   ventricular folds
C)   epiglottal cords
D)   cricohyoid folds
E)   vocal folds (cords) F) A) and C)
G) B) and C)

Question 5

When carbon dioxide levels in the blood increase, the

Accepted Answer

A)   condition is called hypocapnia.
B)   pH of the blood increases.
C)   blood becomes more acidic.
D)   number of hydrogen ions in the blood decreases.
E)   blood becomes more alkaline.F) All of the above
G) A) and E)

Question 6

Mr. Huff and Puff is getting ready to blow up a pool float because he can't find the air pump. He takes a big breath in after exhaling normally. The air he takes in is the

Accepted Answer

A)   inspiratory reserve volume.
B)   vital capacity.
C)   inspiratory capacity.
D)   tidal volume.E) B) and C)
F) B) and D)

Question 7

The thyroid cartilage is part of the __________.

Accepted Answer

The answer of The thyroid cartilage is part of the...

Question 8

During exercise, ventilation initially increases due to

Accepted Answer

A)   increased blood carbon dioxide levels stimulating baroreceptors.
B)   decreased blood oxygen levels stimulating chemoreceptors.
C)   decreased blood pH levels stimulating baroreceptors.
D)   limb movements that stimulate the respiratory center.
E)   abrupt changes in metabolism or blood gases.F) D) and E)
G) A) and D)

Question 9

A baby holding its breath will

Accepted Answer

A)   be termed a "blue baby".
B)   have brain cells damaged because of low blood oxygen levels.
C)   suffer heart damage because of increased pressure in the aorta.
D)   automatically start to breathe when the CO2 levels in the blood reach a high enough value.
E)   automatically start to breathe when oxygen levels decrease slightly.F) C) and D)
G) C) and E)

Question 10

Which of the following is NOT a factor that influences the rate of gas diffusion through the respiratory membrane?

Accepted Answer

A)   the partial pressure gradient of the gases
B)   the thickness of the respiratory membrane
C)   the diffusion coefficient of the gases
D)   the temperature of the gases
E)   the surface area of the membraneF) A) and C)
G) All of the above

Question 11

The Hering-Breuer reflex

Accepted Answer

A)   causes erratic respirations.
B)   helps prevent overinflation of the lungs.
C)   has its sensory components in the sympathetic nerves.
D)   is a normal response to increased oxygen content in the blood.
E)   limits how much air a person can expire.F) B) and E)
G) All of the above

Question 12

When people aspirate liquids or food into their lungs, the liquid or food most commonly enters the right lung rather than the left lung. This is because the right primary bronchus is __________ than the left primary bronchus.

Accepted Answer

A)   longer
B)   thinner
C)   more vertical
D)   less ciliated
E)   shorterF) A) and B)
G) A) and C)

Question 13

Which of the following respiratory membrane layers is closest to air in the alveolus?

Accepted Answer

A)   alveolar epithelium
B)   alveolar basement membrane
C)   capillary basement membrane
D)   capillary endothelium
E)   alveolar fluid (with surfactant) F) A) and E)
G) A) and C)

Question 14

Which of the following functions is associated with the nose?

Accepted Answer

A)   initiating the cough reflex
B)   external respiration
C)   warming the air
D)   producing mucus to trap debris from the air
E)   warming the air and producing mucus to trap debris from the airF) B) and E)
G) C) and D)

Question 15

The lungs have

Accepted Answer

A)   one blood flow route and one lymphatic supply.
B)   two blood flow routes and one lymphatic supply.
C)   one blood flow route and two lymphatic supplies.
D)   two blood flow routes and two lymphatic supplies.
E)   three blood flow routes and one lymphatic supply.F) C) and E)
G) B) and D)

Question 16

Mr. Jones has a blood pH of 7.00 and a temperature of 100.5  °\degree° F. His oxygen-hemoglobin dissociation curve would

Accepted Answer

A)   shift to the right, causing more O2 to be released to his cells.
B)   shift to the left, allowing less O2 to be released to his cells.
C)   show no change, allowing the O2 concentration to remain stable. D) B) and C)
E) A) and B)

Question 17

Which of the following is mismatched?

Accepted Answer

A)   bronchitis - inflammation of the bronchi
B)   emphysema - destruction of the alveolar walls
C)   pulmonary fibrosis - loss of elastic recoil in the lung
D)   cystic fibrosis - replacement of lung tissue with fibrous connective tissue
E)   smokers - chronic obstructive pulmonary diseaseF) None of the above
G) A) and E)

Question 18

Carbon dioxide is more soluble in water than is oxygen. Which gas has the higher rate of diffusion?

Accepted Answer

A)   carbon dioxide
B)   oxygen
C)   Both will have the same rate of diffusionD) A) and C)
E) All of the above

Question 19

Which of the following factors keeps the alveoli expanded?

Accepted Answer

A)   a pneumothorax
B)   negative pleural pressure
C)   alveolar pressure being equal to atmospheric pressure
D)   a reduction in surfactant
E)   negative intra-alveolar pressureF) A) and B)
G) A) and C)

Question 20

Normally, the partial pressure of oxygen gas is higher in the

Accepted Answer

A)   blood of the pulmonary capillaries.
B)   bronchioles.
C)   alveoli.
D)   venous blood.E) A) and B)
F) A) and C)

Exam 23: Respiratory System

During inspiration, contraction of the diaphragm causes the volume of Mr. Jones' thoracic cavity to increase and the pleural pressure to decrease. The pressure in his alveoli (Palv) will

Correct AnswerverifiedShow Answer

Which of the following factors keeps the alveoli expanded?

Correct AnswerverifiedShow Answer

Match the term with the appropriate description, answer with the letter preceding the description. -hard palate "Enter the letter of the correct description below"

Correct AnswerverifiedShow Answer

The thyroid cartilage is part of the __________.

Correct AnswerverifiedShow Answer

Normally, the partial pressure of oxygen gas is higher in the

Correct AnswerverifiedShow Answer

Which of the following respiratory membrane layers is closest to air in the alveolus?

Correct AnswerverifiedShow Answer

Carbon dioxide is more soluble in water than is oxygen. Which gas has the higher rate of diffusion?

Correct AnswerverifiedShow Answer

Which of the following is mismatched?

Correct AnswerverifiedShow Answer

The Hering-Breuer reflex

Correct AnswerverifiedShow Answer

When people aspirate liquids or food into their lungs, the liquid or food most commonly enters the right lung rather than the left lung. This is because the right primary bronchus is __________ than the left primary bronchus.

Correct AnswerverifiedShow Answer

A baby holding its breath will

Correct AnswerverifiedShow Answer

During exercise, ventilation initially increases due to

Correct AnswerverifiedShow Answer

Which of the following functions is associated with the nose?

Correct AnswerverifiedShow Answer

When carbon dioxide levels in the blood increase, the

Correct AnswerverifiedShow Answer

The volume of air inspired or expired with each breath is the

Correct AnswerverifiedShow Answer

Mr. Jones has a blood pH of 7.00 and a temperature of 100.5 °\degree° F. His oxygen-hemoglobin dissociation curve would

Correct AnswerverifiedShow Answer

When air passes through the glottis, which structures vibrate to produce sound?

Correct AnswerverifiedShow Answer

The lungs have

Correct AnswerverifiedShow Answer

Which of the following is NOT a factor that influences the rate of gas diffusion through the respiratory membrane?

Correct AnswerverifiedShow Answer

Mr. Huff and Puff is getting ready to blow up a pool float because he can't find the air pump. He takes a big breath in after exhaling normally. The air he takes in is the

Correct AnswerverifiedShow Answer

During inspiration, contraction of the diaphragm causes the volume of Mr. Jones' thoracic cavity to increase and the pleural pressure to decrease. The pressure in his alveoli (P_alv) will

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Mr. Jones has a blood pH of 7.00 and a temperature of 100.5 $\degree$ F. His oxygen-hemoglobin dissociation curve would

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified