Quiz 10

If the pressure of air in the atmosphere is 760 mm Hg then which of the following pressures of air in the lungs would indicate you are inhaling?

759 mm Hg

Which of the following occurs as air is drawn through the nose?

Air is warmed, filtered, and humidified.

All of the following are TRUE regarding the effect of smoking on the respiratory system EXCEPT which one?

Antimicrobial compounds found in the respiratory mucus of smokers decrease the likelihood of infection.

Spasmodic contraction of bronchial muscles.

Asthma

Inherited condition causing excessively thick mucus production.

Cystic fibrosis

Chronic disorder of alveoli. Causes the smaller airways to collapse during expiration.

Emphysema

Which one of the following best explains why humans must constantly breathe in oxygen in order to stay alive?

Oxygen is essential for the production of most of the ATPs required to fuel cell functions.

The amount of air that remains in the lungs even after a forcible exhalation.

Residual Volume

Total amount of air moved during a quiet inspiration.

Tidal volume

Total amount of air that a person is capable of exhaling after a maximal inhalation.

Vital Capacity

An increase in the amount of carbon dioxide in the body causes

a decrease in the pH of the cerebrospinal fluid.

Which of the following structures is the location of gas exchange between the inhaled air and the blood?

alveoli

Inflammation of the bronchi.

bronchitis

Arrange the following entries in the order in which air contacts them as air is drawn into the body a). trachea b) bronchiole c) pharynx d) alveoli e) larynx

c, e, a, b, d

The rate and depth of normal breathing are determined by

carbon dioxide levels in the blood.

Amount of air that remains outside of the alveoli after an inspiration and therefore does not participate in gas exchange.

dead space volume

Which one of the following muscles separates the thoracic cavity from the abdominal cavity?

diaphragm

During the ingestion of food or liquid, which one of the following tips to block the opening to the trachea?

epiglottis

Is the partial pressure of carbon dioxide in the blood higher or lower than atmospheric levels?

higher

The respiratory control center is located

in the medulla oblongata.

Is the partial pressure of Oxygen in the blood higher or lower than atmospheric levels?

lower

Which of the following is a penetrating wound resulting in collapse of the lung?

pneumothorax

During inspiration, intercostal muscles function to

pull the rib cage up and out, so that lung volume increases.