Respiration System

Anatomy and Physiology B

Unit 5: Respiratory Study Guide

1. What percent of air is oxygen?

a. 21%

2. What is the entire process of gas exchange between atmosphere and body cells called

a. Respiration

i. Events: 1) Movement of air in and out of lungs

1. 2) Gas exchange between blood and air in the lungs by diffusion (external respiration)

2. 3) Gas transport between the lungs and the body

3. 4) Gas exchange between blood and body cells (internal respiration)

3. What is the waste product of cells?

a. Carbon Dioxide

4. What organs are located in the upper respiratory tract?

a. Nose, nasal cavity, paranasal sinus, and pharynx

5. What organs are in the lower respiratory tract?

a. Larynx, Trachea, bronchial tree, and lungs

6. What is the function of the nasal cavity?

a. To conduct air to the pharynx

7. What does mucous do?

a. Mucous traps dust and other small particles that are in the air.

8. What is the function of the larynx?

a. Conducts air in and out of trachea, prevents foreign objects from entering trachea, and houses vocal cords.

9. Which lung is larger, the right or the left?

a. The right lung is larger- has 3 lobes; left has 2 lobes

10. What is laryngitis?

a. Hoarseness or loss of voice

11. What is a bronchoscopy?

a. procedure used to directly examine the trachea and bronchial tree

12. The paranasal sinuses are resonant chambers that affect the quality of voice and function to _________.

13. What is found within the trachea that prevents it from collapsing and blocking the airway?

a. 20 C-shaped pieces of cartilage

14. What is inspiration?

a. occurs when pressure inside alveoli decreases and atmospheric pressure is greater

15. What is tidal volume?

a. The amount of air that enters or leaves the lungs