Chapter 23 Quiz

Which is the correct sequence of events for inhalation? 1. pressure of the atmosphere is greater than the pressure within the thorax 2. volume of the thorax increases and the pressure within the thorax decreases 3. the diaphragm contracts 4. the phrenic nerve fires

4,3,2,1

Which of the following tissues lines the oropharynx? A. pseudostratified ciliated columnar epithelium B. nonkeratinized stratified squamous epithelium C. simple squamous epithelium D. type I and type II alveolar cells E. none of these choices

B. nonkeratinized stratified squamous epithelium

Which of the below tissues forms the exchange surfaces of the alveolus? A. hyaline cartilage B. simple squamous epithelium C. columnar connective tissue with goblet cells D. stratified squamous epithelium E. ciliated pseudostratified columnar epithelium with goblet cells

B. simple squamous epithelium

Which of the following is considered to be a modified respiratory movement? 1. coughing 2. Valsalva maneuver 3. costal breathing A. 1 only B. 2 only C. 3 only D. 1 and 2 are correct E. 1, 2, and 3 are correct

D. 1 and 2 are correct

Surfactant lowers the surface tension of alveolar fluid; it is produced by A. alveolar macrophages. B. fibroblasts. C. type I alveolar cells. D. type II alveolar cells. E. goblet cells.

D. type II alveolar cells.

Exhalation begins when A. Inspiratory muscles relax B. Diaphragm contracts C. Blood circulation is the lowest D. Both Inspiratory muscles relax and Diaphragm contracts E. All of these choices

A. Inspiratory muscles relax

Which structure is located anterior to the esophagus and carries air to the bronchi? A. Trachea B. Larynx C. Nasopharynx D. Pharynx E. None of these choices

A. Trachea

Which of the following is the sum of the residual and the expiratory reserve volume? A. Minimal volume B. Total lung capacity C. Functional residual capacity D. Inspiratory capacity E. Vital capacity

C. Functional residual capacity

Exhalation begins when the A. elastic recoil of the chest wall and lungs occurs. B. internal intercostal muscles contract. C. inspiratory muscles relax. D. elastic recoil of the chest wall and lungs occurs and internal intercostal muscles contract. E. elastic recoil of the chest wall and lungs occurs, internal intercostal muscles contract, and inspiratory muscles relax.

C. inspiratory muscles relax.

All of the following cause a increase in lung volume during inspiration, except A.elevation of the ribs via intercostal contraction. B. contraction of the diaphragm muscles. C. relaxation of the diaphragm muscles. D. all of these.

C. relaxation of the diaphragm muscles.

Which of the following is the primary gas exchange site? A. Bronchus B. Bronchiole C. Nasal sinuses D. Trachea E. Alveolus

E. Alveolus