Human Biology

Sylvia S. Mader, Michael Windelspecht

Chapter 10

Respiratory System - all with Video Answers

Educators

Chapter Questions

Problem 1

Label this diagram of the human respiratory tract.

Joanna Quigley

Joanna Quigley

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Problem 2

How is inhaled air modified before it reaches the lungs?
a. It must be humidified.
b. It must be warmed.
c. It must be filtered.
d. All of these are correct.

Amy Du

Numerade Educator

Problem 3

What is the name of the structure that prevents food from entering the trachea?
a. trachea
b. septum
c. epiglottis
d. Adam's apple

Joanna Quigley

Numerade Educator

Problem 4

This structure is where the majority of gas exchange occurs.
a. trachea
b. larynx
c. alveolus
d. bronchial tree

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Numerade Educator

Problem 5

This connects the larynx to the bronchi in the lungs.
a. epiglottis
b. pleura
c. trachea
d. esophagus

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Problem 6

Which of these is incorrect concerning inspiration?
a. The rib cage moves up and out
b. The diaphragm contracts and moves down.
c. Pressure in the lungs decreases, and air comes rushing in.
d. The force of the incoming air increases lung volume.

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Problem 7

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

Joanna Quigley

Numerade Educator

Problem 8

The maximum volume of air that can be moved in and out during a single breath is called the
a. expiratory and inspiratory reserve volume.
b. residual volume.
c. tidal volume.
d. vital capacity.
e. functional residual capacity.

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Numerade Educator

Problem 9

In humans, the respiratory center
a. is stimulated by carbon dioxide.
b. is located in the medulla oblongata.
c. controls the rate of breathing.
d. All of these are correct.

Amy Du

Numerade Educator

Problem 10

These types of receptors detect changes in $\mathrm{pH}$, which indicate variations in the level of carbon dioxide in the body.
a. thermoreceptors
b. photoreceptors
c. mechanoreceptors
d. chemoreceptors

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Numerade Educator

Problem 11

The enzyme carbonic anhydrase
a. causes the blood to be more basic in the tissues.
b. forms carbonic acid in the blood.
c. actively transports carbon dioxide out of capillaries.
d. is active only at high altitudes.
e. All of these are correct.

Joanna Quigley

Numerade Educator

Problem 12

Hemoglobin assists in the transport of gases primarily by
a. combining with oxygen.
b. combining with $\mathrm{CO}_{2}$
c. combining with $\mathrm{H}^{+}$
d. being present in red blood cells.
e. All of these are correct.

Joanna Quigley

Numerade Educator

Problem 13

The binding of small amounts of carbon dioxide to hemoglobin produces
a. oxyhemoglobin.
b. carbonic anhydrase.
c. dehemoglobin.
d. carbaminohemoglobin.
e. bicarbonate hemoglobin.

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Numerade Educator

Problem 14

Which of the following is not true of obstructive pulmonary disorders?
a. Air does not flow freely in the airways.
b. Vital capacity is reduced due to loss of lung elasticity.
c. Disorders include chronic bronchitis, emphysema, and asthma.
d. Ventilation takes longer to occur.

Joanna Quigley

Numerade Educator

Problem 15

Which of the following is not an infection of the upper respiratory tract?
a. tonsillitis
b. sinusitis
c. otitis media
d. bronchitis
e. All of these are infections of the upper respiratory tract.

Joanna Quigley

Numerade Educator