Chapter C7. Il sistema respiratorio #108764 - Prove ed esercizi Zanichelli

Gas-exchange surfaces

Internal respiration refers to

A:

the exchange of gases between the air and the blood in the lungs.

B:

the movement of air into the lungs.

C:

the exchange of gases between the blood and tissue fluid.

D:

cellular respiration, resulting in the production of ATP.

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Gas-exchange surfaces

Food and air both travel through the

A:

lungs.

B:

pharynx.

C:

larynx.

D:

trachea.

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Gas-exchange surface

If the digestive and respiratory tracts were completely separate in humans, there would be no need for

A:

swallowing.

B:

a nose.

C:

an epiglottis.

D:

a diaphragm.

E:

All of these are correct.

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Ventilation and transport of gases

Which of these statements correctly goes with expiration rather than inspiration?

A:

The rib cage moves up and out.

B:

The diaphragm relaxes and moves up.

C:

Pressure in the lungs decreases, and air comes rushing out.

D:

The diaphragm contracts and lowers.

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Gas-exchange surfaces

One problem faced by terrestrial animals with lungs, but not by freshwater aquatic animals with gills, is that

A:

gas exchange involves water loss.

B:

breathing requires considerable energy.

C:

oxygen diffuses very slowly in air.

D:

the concentration of oxygen in water is greater than that in air.

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Gas-exchange surfaces

Which of these statements is anatomically incorrect?

A:

The nose has two nasal cavities.

B:

The pharynx connects the nasal cavity and the mouth to the larynx.

C:

The larynx contains the vocal cords.

D:

The trachea enters the lungs.

E:

The lungs contain many alveoli.

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Ventilation and transport of gases

Air enters the human lungs because

A:

atmospheric pressure is lower than the pressure inside the lungs.

B:

atmospheric pressure is greater than the pressure inside the lungs.

C:

although the pressures are the same inside and outside, the partial pressure of oxygen is lower within the lungs.

D:

the residual air in the lungs causes the partial pressure of oxygen to be lower than it is outside.

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Gas-exchange surfaces

Which is a requirement for a body respiratory surface?

A:

a high surface-area-to-volume ratio

B:

plentiful supply of water in the environment

C:

low metabolic activity

D:

thin, moist body wall

E:

cilindric cells covered with chitin

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Ventilation and transport of gases

The chemical reaction that converts carbon dioxide to a bicarbonate ion takes place in

A:

the blood plasma.

B:

red blood cells.

C:

the alveoli.

D:

the hemoglobin molecule.

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Ventilation and transport of gases

In humans, the respiratory control center

A:

is located in the medulla oblongata.

B:

controls the rate of breathing.

C:

is stimulated by hydrogen ion concentration.

D:

All of these are correct.

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