Skip to Main Content

Chapter 17: The Respiratory System

Which of the following components increase(s) as a proportion of the respiratory tract wall from trachea to alveoli?

a. Cilia

b. Elastic fibers

c. Smooth muscle

d. Cartilage

e. Goblet cells

Air moving rapidly across the vocal cords and causing them to vibrate and produce sound is contacting what type of epithelium?

a. Pseudostratified ciliated

b. Stratified squamous keratinized

c. Stratified squamous nonkeratinized

d. Simple squamous

e. Simple cuboidal

Which structural feature distinguishes between terminal and respiratory bronchioles?

a. Alveoli

b. Cilia

c. Exocrine bronchiolar cells

d. Mucous glands in lamina propria

e. Smooth muscle

Which of the following features distinguishes a bronchus within a lung from the primary bronchi?

a. Glands in the submucosa

b. Pseudostratified ciliated columnar epithelium

c. Smooth muscle in the wall

d. Irregular plates of cartilage

e. Goblet cells in the epithelium

Which feature involved in protection of the respiratory tract is absent from the digestive tract?

a. Goblet cells

b. Cilia

c. Lymphoid nodules

d. Secretory IgA

e. Tight junctions

Which of the following is true of pulmonary surfactant?

a. Secreted by type I pneumocytes

b. Forms layer rich in phospholipid overlying a thin aqueous phase

c. Prevents alveolar collapse by increasing surface tension

d. Does not affect bacterial survival

e. Is secreted by goblet cells

The pulmonary (functional) and bronchial (nutritive) arterial systems enter the lungs separately at the hilus but anastomose into ...

Pop-up div Successfully Displayed

This div only appears when the trigger link is hovered over. Otherwise it is hidden from view.