Chapter 24

Front 1

Boyle's law states that

Back 1

The volume of gas is inversely proportional to its pressure.

Front 2

When the diaphragm contracts, the volume of the thorax increases, thoracic pressure

Back 2

Decreases, and air rushes into the lungs

Front 3

Quiet inspiration is a function of:

Back 3

The diaphragm and external intercostal

Front 4

During normal quiet inspiration, the amount of air exchanged between the lungs and the atmosphere is called ___ and has a volume of ___ ml.

Back 4

tidal volume; 500

Front 5

Function al residual capacity (FRC) equals:

Back 5

ERV+RV.

Front 6

Eupnea is a term used to describe.

Back 6

Normal breathing

Front 7

Under normal conditions, air in the atmosphere exerts a pressure of

Back 7

760 mm HG

Front 8

Areas where gas exchange cannot take place are:

Back 8

All of the above

Front 9

Dalton's law is also known as:

Back 9

The law of partial pressures.

Front 10

Temperature is the measurement of the motion of molecules.

Back 10

true

Front 11

The largest amount of air that enter and leave the lungs during respiration is termed total lung capacity (TLC)

Back 11

false

Front 12

Residual volume is the volume remaining in the respiratory tract after maximum expiration.

Back 12

True

Front 13

The temporary cessation of breathing is termed apnea.

Back 13

True

Front 14

It is not possible to exhale all of the air from your lungs

Back 14

True

Front 15

If oxygen is 21% of the atmosphere, it will contribute ___ of the total atmospheric pressure

Back 15

21%

Front 16

The amount of oxygen that diffuses into blood each minute depends on the:

Back 16

total functional surface area of the respiratory membrane, respiratory minute volume, alveolar ventilation

Front 17

PO2 at standart atmospheric pressure is approximately

Back 17

160 mm Hg

Front 18

Anything that decreases the total functional surface area of the respiratory membrane:

Back 18

Tends to decrease oxygen diffusion into the blood

Front 19

Air in the pleural space of the thoracic cavity is called a pneumothorax

Back 19

true

Front 20

Partial pressure and tension can be used interchangeably

Back 20

True

Front 21

The diameter of the pulmonary capillaries allows red blood cells to travel at 10 abreast.

Back 21

false

Front 22

Nitrogen is the gas of greatest concentration in atmospheric air.

Back 22

true

Front 23

Oxygen is carried in blood

Back 23

as oxyhemoglobin, dissolved in plasma, molecularly as HbO2

Front 24

Which of the following is not a manner in which CO2 is transported in the blood

Back 24

bound to the heme group of the hemoglobin molecule

Front 25

Increasing the carbon dioxide content of blood results in:

Back 25

increased H+ concentration of plasma and decreased blood pH

Front 26

Approximately 97 % of oxygen is transported as ___, whereas the remaining 3 % is tranported dissolved in _____

Back 26

oxyhemoglobin; plasma

Front 27

The exact amount of oxygen in blood depends mainly upon the amount of hemoglobin present.

Back 27

true

Front 28

as plamsa PC02 increases, the CO2 carrying capacity of blood decreases

Back 28

false

Front 29

Interstitial fluid PO2 and intracellular fluid PO2 are essentially the same.

Back 29

false

Front 30

A right shift of oxgyen-hemoglobin dissociation cure due to increased PCO2 is known as the Bohr effect.

Back 30

true

Front 31

Basic rhythm of the respiratory cycle seems to be generated by:

Back 31

Medullary rhythmicity area, the inspiratory center, the expiratory center

Front 32

The dividing reflex

Back 32

is responsible for the astonishing recovery of near-drowning victims in cold water.

Front 33

Input from the apneustic center in the pons inhibits the inspiratory center, causing a decrease in the length and depth of inspiration.

Back 33

false

Front 34

Irritation of the phrenic nerves can cause extended periods of hiccups

Back 34

true

Front 35

COPD

Back 35

chronic obstructive pulmonary disease

Front 36

____ results from excessive tracheobronchial secretions that obstruct airflow

Back 36

bronchitis

Front 37

____ may result from the progression of chronic bronchitis or other conditions as air becomes trapped within alveoli causing them to enlarge and eventually rupture

Back 37

Emphysema

Front 38

_____ is an obstructive disorder characterized by recurring spasms of the smooth muscle in the walls of the bronchial air passages

Back 38

ashtma

Front 39

labored breathing

Back 39

dyspnea

Front 40

inhaling

Back 40

inspiration

Front 41

Volume of air exhaled after inspiration

Back 41

tidal volume

Front 42

hemoglobin combined with oxygen

Back 42

oxyhemoglobin

Front 43

Tension

Back 43

partial pressure

Front 44

Used to measure amount of air exchanged in breathing

Back 44

spirometer

Front 45

exhaling

Back 45

expiration

Front 46

Breathing

Back 46

ventilation

Front 47

The term that means the same thing as breathing is :

Back 47

Pulmonary ventilation

Front 48

Carbaminohemoglobin is formed when ____ binds to hemoglobin

Back 48

carbon dioxide

Front 49

Most of the oxygen is transported by the blood is

Back 49

bound to the hemoglobin

Front 50

Which of the following does not occur during inspiration?

Back 50

the diaphragm relaxes

Front 51

A young adult male would have a vital capacity of about ___ ml

Back 51

4800

Front 52

The amount of air that can be forcibly exhaled after expiring the tidal volume is known as the

Back 52

expiratory reserve volume

Front 53

VC=

Back 53

TC+IRV+ERV

Front 54

Collapsed lung

Back 54

pneumothorax

Front 55

quaternary protein

Back 55

hemoglobin

Front 56

approximately 3300 mL

Back 56

inspiratory reserve volume

Front 57

PO2

Back 57

oxygen tension

Front 58

normal exhalation volume

Back 58

tidal volume

Front 59

increased in emphysema

Back 59

physiological dead space

Front 60

helps control respirations

Back 60

Hering-Breuer reflexes

Front 61

respiratory stimulants

Back 61

CO2

Front 62

Cessation of breathing

Back 62

apneusis

Front 63

sensitive to changes in arterial CO2 and pH

Back 63

chemoreceptors