The major role of the respiratory system is to

a. dispose of waste products in a solid form

b. permit the flow of nutrients through the body

c. supply the body carbon dioxide and dispose of oxygen

d. supply the body with oxygen and dispose of carbon dioxide

d. supply the body with oxygen and dispose of carbon dioxide

True/False

Four processes--pulmonary ventilation, external respiration, transport of respiratory gases, and internal respiration--must all occur in order for the respiratory system to function fully.

True

The upper respiratory structures include the nose, the larynx, and the

a. epiglottis c. pharynx

b. lungs d. trachea

c. pharynx

Correct Term:

The thyroid cartilage/arytenoid cartilage is the largest and most prominent of the laryngeal cartilages.

thyroid cartilage

True/False

The epiglottis forms a lid over the larynx when we swallow food; it closes off the respiratory passageway to to incoming food or drink.

True

Air flows from the larynx to the trachea, and then enters the

a. left and right lungs c. pharynx

b. left and right main bronchi d. segmental bronchi

b. left and right main bronchi

Correct Term:

The lining of the trachea is pseudostratified ciliated columnar epithelium/transitional epithelium, which propels dust articles, bacteria, and other debris away from the lungs.

columnar epithelium

True/False

All but the smallest branches of the bronchial tree have cartilaginous reinforcements in their walls.

True

____, tiny balloonlike structures, are composed of a single thin layer of squamous epithelium. They are the main structural and functional units of the lung and the actual sites of gad exchange.

Alveoli

Correct Term:

Fissures divide the lungs into lobes, three on the right and two/three on the left.

two