ch 3 vocab

Question 1

aerobic

Answer 1

Occuring in the presence of oxygen.

Question 2

alveolar air

Answer 2

The amount of gas that reaches the alveoli with each breath.

Question 3

alveolar ventilation

Answer 3

Exchanging the gas in the alveoli with fresh air.

Question 4

anaerobic

Answer 4

Occurring in the absence of, or without, oxygen.

Question 5

anemia

Answer 5

A decreased number of red blood cells in the blood.

Question 6

apnea

Answer 6

The absence of ventilation.

Question 7

chemoreceptors

Answer 7

Peripheral and central receptors that monitor the levels of chemicals in the blood.

Question 8

dead space

Answer 8

The amount of inhaled air that does not participate in respiration.

Question 9

expiration

Answer 9

The process of moving air out of the lungs.

Question 10

expiratory reserve volume

Answer 10

The amount of air that can be exhaled following normal exhalation.

Question 11

Herring-Breuer reflex

Answer 11

The nervous system mechanism that terminates inhalation and prevents lung overexpansion.

Question 12

hypercapnia

Answer 12

Elevated levels of carbon dioxide in the blood.

Question 13

hypoxemia

Answer 13

A decrease in the amount of oxygen in the bloodstream.

Question 14

hypoxia

Answer 14

Inadequate supply of oxygen to the tissues.

Question 15

hypoxic drive

Answer 15

Condition in which patients with chronic hypercapnia increase their respiratory rate exclusively in response to decreased oxygen levels in the blood.

Question 16

inspiration

Answer 16

The process of air moving into the lungs.

Question 17

inspiratory reserve volume

Answer 17

The maximum amount of air that can be forcefully inhaled following a full inhalation.

Question 18

mechanoreceptors

Answer 18

Peripheral receptors that detect stretch or pressure.

Question 19

minute volume

Answer 19

The amount of air moved in and out of the respiratory tract per minute, which is determined by the respiratory rate.

Question 20

negative pressure ventilation

Answer 20

The process of pulling air into the lungs by decreasing intrathoracic pressure.

Question 21

oxygenation

Answer 21

The process of assuring an adequate supply of oxygen molecules for delivery to the body’s cells.

Question 22

positive pressure ventilation

Answer 22

The process of pushing air into the lungs by increasing the pressure of the gas outside of the body.

Question 23

residual volume

Answer 23

The air that remains in the lungs after a maximal respiration.

Question 24

respiration

Answer 24

The process of exchanging oxygen and carbon dioxide.

Question 25

respiratory center

Answer 25

The area of the brainstem located in the pons and medulla that is responsible for involuntary control of bleeding.

Question 26

respiratory rate

Answer 26

The number of ventilatory cycles in a unit of time, usually 1 minute, also known as the ventilation rate.

Question 27

tidal volume

Answer 27

The volume of air, usually measured in millimeters, which is exchanged in one ventilatory cycle, also known as the ventilatory volume.

Question 28

ventilation

Answer 28

The process of moving air into and out of the lungs.

Question 29

ventilation cycle

Answer 29

One inspiration and one expiration.

Question 30

ventilation rate

Answer 30

The number of ventilatory cycles in a unit of time, usually 1 minute, also known as the respiratory rate.

Question 31

ventilatory depth

Answer 31

The volume of air, usually measured in milliliters, which is exchanged in one ventilatory cycle, also known as the tidal volume.