Practice Questions Moodle

Question 1

A baby holding its breath will

Answer 1

Automatically pay start to breathe when the CO2 levels in the blood start to reach a high enough value

Question 2

A greater than normal amount of CO2 in the blood is called

Answer 2

Hypercapnia

Question 3

A patient have severe pneumonia, which has thickened the respiratory membrane. Despite oxygen therapy. He has still had rapid respiration and feels as is he is not getting enough air. This is because

Answer 3

Even though he is receiving enough O2 CO2 and H+ accumulate in his blood and cause th respiratory rate to continue to increase

Question 4

A person has severe pneumonia damage or disease in the upper area of their right lung. Surgery is necessary. The doctor would need to remove

Answer 4

The apical bronchopulmonary segment of the right lung

Question 5

An immune function of the respiratory system would be

Answer 5

Preventing microorganisms from entering the body

Question 6

After hyperventilating for several minutes, a person may develop short periods of apnea because

Answer 6

The Level of CO2 decreases below the level necessary to stimulate the inspiratory center

Question 7

Air in the pleural cavity is called

Answer 7

Pneumothorax

Question 8

As acidity increase, how does this affect the affinity of hemoglobin?

Answer 8

Oxyhemoglobin affinity decreases

Question 9

As air moves down through the tracheobronchial tree, the FIRST segment that will contain alveoli will be

Answer 9

Respiratory bronchioles

Question 10

As the result of an asthmatic attack

Answer 10

Ventilation is inadequate to oxygenate blood

Question 11

Blood O2 levels

Answer 11

Within the normal PO2 range have little effect on regulation of respiration

Question 12

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

Answer 12

Carbon dioxide

Question 13

Contraction of the diaphragm will increase the superior - inferior dimension of the thoracic cavity

Answer 13

Diaphragm

Question 14

Direct stimulation of neurons whiting the dorsal respiratory group would cause an increase in teh frequency of action potential in the

Answer 14

Phrenic nerve that innervates the diaphragm

Question 15

During exercise, the oxygen- hemoglobin dissociation curve

Answer 15

Shifts to the right

Question 16

During exercise, ventilation initially increases due to

Answer 16

Limb movements that stimulate the respiratory center

Question 17

During expiration, the alveolar pressure must be

Answer 17

Greater than atmospheric pressure

Question 18

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

Answer 18

Decrease below atmospheric pressure ( Pb) causeing air to move into his lungs

Question 19

During swallowingm, the opening into the larynx is covered by the

Answer 19

Epiglottis

Question 20

Each lobe of each lung is supplied by a ______

Answer 20

Secondary bronchus

Question 21

Expiration during quiet breathing

Answer 21

Occurs when the diaphragm and external intercostal muscles relax

Question 22

For air flow into or out of the lunch, there must be

Answer 22

Pressure gradient established between teh atmosphere and the alveoli

Question 23

Gas exchange between teh air in the lungs and the blood takes place in the _____

Answer 23

Alveoli

Question 24

Hemoglobin that has oxygen attached is called _____

Answer 24

Oxyhemoglobin

Question 25

According to Bohrs effect, hemoglobin that has released its O2

Answer 25

Will bind more readily to CO2

Question 26

How does an increase in body temperature affect the oxyhemoglobin

Answer 26

It causes a shift to the right

Question 27

How does carbon monoxide affect red blood cells ( RBCs)

Answer 27

The hemoglobin within the RBC bind to carbon monoxide

Question 28

Hyperventilation _______ plasma CO2 plasma CO2 levels which _____ plasma pH

Answer 28

Decreases, increases

Question 29

F there is an accumulation of acidic products in the plasma, one would expect _______

Answer 29

An increase in respiration

Question 30

In which of the following situation is compliance greatest

Answer 30

Emphysema

Question 31

Marcus exhales normally, then, using forced expiration, he exhales as much air as possible,, the volume of air still remaining in his lungs is called

Answer 31

Residual volume

Question 32

Most O2 is carried in the blood ________ but most CO2 is ________

Answer 32

Bound to hemoglobin; associated with biocarbonate ions in the plasma CO2 levels

Question 33

Most CO2 is transported in the blood

Answer 33

In the form of bicarbonate ions

Question 34

Mr hones has a blood pH of &.00 and a temperature of 100.5F. His oxygen- hemoglobin dissociation curve would

Answer 34

Shift to the right, causeing more O2 to be released, to his cells

Question 35

Men smith hypoventilates and retains too much CO2. Which of the following receptors is stimulated by an increase in CO2

Answer 35

Peripheral chemoreceptors

Question 36

Normally, the partial pressure of oxygen has is high in the

Answer 36

Alveoli

Question 37

Of the following structures, the largest in diameter is the

Answer 37

Trachea

Question 38

One of the functions of the respiratory system is to alter the levels of carbon dioxide in teh blood; this regulating

Answer 38

Blood pH

Question 39

One of the functions of the respiratory system is to alter the levels of carbon dioxide int he blood, thus regulating

Answer 39

Blood pH

Question 40

One of the functions of the respiratory system is to alter the levels of carbon dioxide in the blood thus regulating

Answer 40

Blood Ph

Question 41

Oxygen and carbon dioxide are exchanged across teh respiratory membrane by teh process of

Answer 41

Diffusion

Question 42

Oxygen diffusion form the alveolus to the pulmonary capillary occurs because

Answer 42

Alveolar PO2 is greater that capillar PO2

Question 43

Oxygen is transported in the blood

Answer 43

Dissolved in the plasma and bound to hemoglobin

Question 44

Paul 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

Answer 44

Inspiratory capacity

Question 45

Physiological dead air pace is anatomical dead space plus

Answer 45

The volume of any alveoli where gas exchange is diminished

Question 46

Physiological dead air space is anatomical dead

Answer 46

The volume of any alveoli where gas exchange is diminished

Question 47

Pulmonary edema will cause the rate of gas exchange diffusion to

Answer 47

Decrease

Question 48

Rhythmicity of breathing involves

Answer 48

The preobotzinger complex of the ventral respiratory group