Which of the following are functions of the respiratory system? a. Air distributor b. Gas exchanger c. Filter air d. All of these are functions of the respiratory system.

What is the name of the barrier that is found between the blood in the capillaries and the air in the alveolus? a. Capillary membrane b. Alveoli membrane c. Respiratory mucosa d. Respiratory membrane

This organ is not in the lower respiratory tract. a. Trachea b. Pharynx c. Bronchial tree d. Lungs

Which of the following is a function of the paranasal sinuses? a. They help produce mucus for the respiratory tract. b. They lighten the bones of the skull. c. They serve as a resonant chamber for sound. d. All of these are functions of the paranasal sinuses.

The portion of the pharynx that is behind the mouth is called the a. nasopharynx. b. oropharynx. c. laryngopharynx. d. Eustachian tube

Which of the following is not true of the pharynx? a. It is a passageway for both air and food. b. It is also called the throat. c. The eustachian tubes from the oropharynx allow for an equalization of pressure in the ear. d. All of these are true of the pharynx.

This structure prevents food from entering the trachea during swallowing. a. The epiglottis b. The glottis c. The vocal cords d. The pharynx

Which of the following is not true of the trachea? a. It extends from the pharynx to the primary bronchi. b. It is also called the windpipe. c. It contains C-shaped rings of cartilage. d. The primary bronchi are branches off the trachea.

The first branch of the trachea that no longer contains cartilage is the a. primary bronchi. b. secondary bronchi. c. bronchioles. d. alveolar ducts.

This covers the outer surface of the lungs. a. The visceral pleura b. The parietal pleura c. The respiratory membrane d. The respiratory mucosa

This does not occur in the lungs. a. Pulmonary ventilation b. External respiration c. Internal respiration d. All of these occur in the lungs.

During inspiration a. the abdominal muscles contract. b. the diaphragm relaxes. c. the volume of the chest cavity decreases. d. the air pressure of the chest cavity decreases.

During expiration a. the diaphragm relaxes. b. the volume of the chest cavity increases. c. the air pressure of the chest cavity decreases. d. All of these occur during expiration.

In external respiration a. the level of oxygen in the blood decreases. b. the level of carbon dioxide in the blood increases. c. the level of carbon dioxide in the blood decreases. d. the level of oxygen and carbon dioxide are equal.

Dyspnea means a. labored or difficult breathing. b. an increase in breathing. c. a temporary cessation of breathing for a brief time. d. normal respiratory rate.

In internal respiration a. the level of oxygen in the blood decreases. b. the level of carbon dioxide in the blood increases. c. the level of carbon dioxide decreases. d. the level of oxygen in the blood decrease and the level of carbon dioxide in the blood increases.

Most of the carbon dioxide is carried in the blood a. as carbaminohemoglobin. b. dissolved in the plasma. c. as the bicarbonate ion. d. as carbonic anhydrase.

Which of the following is not part of vital capacity? a. Residual volume b. Tidal volume c. Expiratory reserve volume d. Inspiratory reserve volume

When carbon dioxide dissolves in water, some of the carbon dioxide molecules associate with water to form a. bicarbonate ions. b. hydrogen ions. c. carbaminohemoglobin. d. carbonic acid.

The respiratory center is located in this part of the brain. a. The cerebrum b. The brainstem c. The cerebellum d. The hypothalamus

the term that means the same as breathing is pulmonary ventilation True/false

True

most of the oxygen transported by the blood is bond to hemoglobin True/false

True

a young adult male would have a vital capacity of about _________ mL. A. Apex B. Pulmonary ventilation C. Pharynx D. 4,800

what is the segment of the pharynx called ? A. Laryngopharynx B. Oropharynx C. Apex D. Bond to hemoglobin

What is the upper portion of the lung called? A. Neck B. Septum C. Dorsum D. Apex