Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
The framework of the larynx is formed by nine pieces of cartilage, the largest of which is the thyroid cartilage.

Which of the following are functions of the respiratory system? Circle all that apply.

a. Providing for speech

b. Regulating the autonomic nervous system

c. Maintaining the acid-base balance of the blood

d. Temperature homeostasis

e. Raising the pressure in the abdominopelvic cavity

f. Assisting in blood pressure regulation

Air enters the lungs through the hollow passages known collectively as the _____, which terminate in grapelike clusters called _____. The lungs are encased in the ____ membranes.

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

The trachea contains O-shaped rings of hyaline cartilage.

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

Goblet cells secrete serous fluid into the respiratory tract.

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

The pseudostratified ciliated columnar epithelium of the respiratory tract warms, filters, and humidifies the inspired air.

The function of the epiglottis is to:

a. Contract muscularly to cover the laryngopharynx

b. Vibrate to produce sound

c. Trigger a cough reflex

d. Cover the glottis during swallowing

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

Oxygen is transported primarily by dissolving in the plasma.

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

Each Hb protein can carry up to four oxygen molecules.