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Human Body (BIOL 1047) > Week 6 Respiratory > Flashcards

Week 6 Respiratory Flashcards

1
Q

The amount of air that can be inspired above the tidal volume is called ________.

Select one:

a. vital capacity
b. expiratory reserve capacity
c. reserve air capacity
d. inspiratory reserve capacity

A

d

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2
Q

External respiration refers to:

Select one:
a. the exchange of gas between alveoli and blood

b. expiration
c. the exchange of gas between the atmosphere and the lungs (inspiration and expiration).
d. the exchange of gas between blood and the tissue (body cells)

A

a

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3
Q

In the plasma, the quantity of oxygen free in solution is ________.

Select one:

a. Approximately 98.5%
b. Approximately 21%
c. About 90%
d. About 1.5%

A

d

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4
Q

Which statement about CO2 is INCORRECT?

Select one:
a. Its concentration in the blood is decreased by hyperventilation.

b. Its accumulation in the blood is associated with a decrease in pH.
c. More CO2 is bound to Hemoglobin the blood than stored as bicarbonate ions
d. CO2 concentrations are greater in venous blood than arterial blood.

A

c

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5
Q

The loudness of a person’s voice depends on the ________.

Select one:

a. strength of the intrinsic laryngeal muscles
b. force with which air rushes across the vocal folds
c. thickness of vestibular folds
d. length of the vocal folds

A

b

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6
Q

The respiratory membrane is made up of all of the following EXCEPT?

Select one:

a. Fused basement membrane
b. Capillary endothelium
c. Alveolar membrane
d. Macrophages membrane

A

d

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7
Q

Tidal volume is air ________.

Select one:

a. exchanged during normal breathing
b. forcibly expelled after normal expiration
c. inhaled after normal inspiration
d. remaining in the lungs after forced expiration

A

a

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8
Q

Which of the following is NOT a structure in the conducting zone?

Select one:

a. Larynx
b. Alveolar sac
c. Right primary bronchus
d. Nasal cavity

A

b

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9
Q

The most powerful respiratory stimulus for breathing in a healthy person is __________________.

Select one:

a. increase in nitrogen levels
b. pH (alkalosis)
c. loss of oxygen in tissues
d. increase of carbon dioxide

A

d

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10
Q

Respiratory control centers are located in the _________________.

Select one:

a. midbrain and medulla
b. medulla and pons
c. upper spinal cord and medulla
d. pons and midbrain

A

b

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11
Q

The point in the circulation where the concentration of CO2 would be at its highest would be?

Select one:

a. In the arteries
b. In the aorta
c. In the left atrium
d. In the pulmonary arteries

A

d

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12
Q

The normal muscles involved in quiet breathing that allow for the expansion and contraction of the thoracic cavity are the:

Select one:

a. internal and external intercostal muscles
b. the external intercostal muscles and diaphragm
c. the diaphragm and abdominal muscles
d. abdominal muscles and internal intercostal muscles

A

b

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13
Q

A premature baby usually has difficulty breathing on their own. However, the respiratory system is generally developed enough for survival by ________.

Select one:

a. 15-17 weeks
b. 20-24 weeks
c. 28-32 weeks
d. 38-39 weeks

A

c

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14
Q

Inspiratory capacity is ________.

Select one:

a. the total amount of exchangeable air
b. the total amount of air that can be inspired after a tidal expiration
c. functional residual capacity
d. air inspired after a tidal inhalation

A

b

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15
Q

Select the CORRECT statement about the pharynx.

Select one:
a. The laryngopharynx is the part of the pharynx found behind the nasal cavity.

b. Only food, not air passes through the pharynx.
c. Is a funnel-shaped structure that connects the nasal cavity and mouth cavity to the larynx and esophagus
d. The pharynx houses the vocal cords.

A

c

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16
Q

The pleura that covers the surface of the lung tissue is called the:

Select one:

a. parietal pleura
b. pleural fluid
c. visceral pleura
d. alveolar pleura

A

c

17
Q

Which of the following is NOT a cell type found in the alveolus?

Select one:

a. Basophils
b. Type II alveolar cells
c. Simple Squamous epithelium
d. Macrophages

A

a

18
Q

Oxygen and carbon dioxide are exchanged in the lungs and through all cell membranes by ________.

Select one:

a. diffusion
b. filtration
c. active transport
d. osmosis

A

a

19
Q

The majority of epithelium found in the nasal cavity is:

Select one:

a. Transitional epithelium
b. pseduostratified ciliated columnar epithelium
c. columnar epithelium
d. cuboidal epithelium

A

b

20
Q

The nose serves all the following functions except ________.

Select one:

a. as a passageway for air movement
b. for gas exchange
c. Warming and humidifying the air
d. cleansing the air

A

b

21
Q

The relationship between the pressure and volume of gases is:

Select one:

a. The smaller the volume the lower the pressure
b. Called Dalton’s Law
c. The smaller the volume the higher the pressure
d. Non-existent, the two variables are unrelated

A

c

22
Q

If through having COPD you retained CO2, your blood pH would:

Select one:

a. be unaffected, only your breathing rate would be adjusted
b. would reach a state of alkalosis
c. be higher
d. be lower

A

d

23
Q

Pulmonary veins:

Select one:

a. carry deoxygenated blood from the right side of the heart to the lungs.
b. return newly oxygenated blood back to the right side of the heart.
c. return newly oxygenated blood back to the left side of the heart.
d. carry deoxygenated blood from the left side of the heart to the lungs.

A

c

24
Q

The FEV1 refers to:

Select one:
a. The amount of air that can be inhaled forcibly in the first second after a tidal expiration.

b. The amount of air normally exchanged in one minute.
c. The forced vital capacity of the lungs.
d. The amount of air that can be forcibly expelled in the first second after the deepest possible inhalation.

A

d

25
Q

Intrapulmonary pressure is the ________.

Select one:

a. pressure within the alveoli of the lungs
b. pressure within the pleural cavity
c. is always the same as atmospheric pressure
d. difference between atmospheric pressure and respiratory pressure

A

a

26
Q

Inspiration occurs as a result of:

Select one:
a. An increase in the volume of the thoracic cavity leading to an increase in intrapulmonary pressure below atmospheric pressure.

b. An increase in the volume of the thoracic cavity leading to a reduction in intrapulmonary pressure below atmospheric pressure.
c. A decrease in the volume of the thoracic cavity leading to a reduction in intrapulmonary pressure below atmospheric pressure.
d. A decrease in the volume of the thoracic cavity leading to an increase in intrapulmonary pressure below atmospheric pressure.

A

b

27
Q

Altogether there is ______ lobes in the lung when considering both the right and left lungs.

Select one:

a. 4
b. 2
c. 6
d. 5

A

d

28
Q

Which of the following incorrectly describes mechanisms of CO2 transport?

Select one:

a. 7-10% of CO2 is dissolved directly into the plasma
b. 20% of CO2 is carried in the form of carbaminohemoglobin (attached to haemoglobin)
c. Majority is transported as bicarbonate ion in plasma
d. 55% is transported freely in the blood as CO2

A

d

29
Q

The erythrocyte count increases after a while when an individual goes from a low to a high altitude because the ________.

Select one:
a. concentration of oxygen and/or total atmospheric pressure is lower at high altitudes

b. basal metabolic rate is higher at high altitudes
c. concentration of oxygen and/or total atmospheric pressure is higher at higher altitudes
d. temperature is lower at higher altitudes

A

a

30
Q

Which of the following is correct?

Select one:
a. A pulse oximeter measures respiratory rate and oxygen saturation.

b. A pulse oximeter measures pulse rate and oxygen saturation levels.
c. A pulse oximeter measures respiratory rate and heart rate

d. A pulse oximeter should only be used on infants.
after surgery

A

b

Human Body (BIOL 1047) (11 decks)

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