Unit 11 Study Guide

Unit 11: Respiratory System Study guide

Directions: Answer the following, submit through messages.

1. What percent of air is oxygen? 21%

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

3. What is the waste product of cells? Carbon dioxide.

4. What organs are located in the upper respiratory tract? Nose, nasal cavity, paranasal sinuses, and pharynx.

5. What organs are in the lower respiratory tract? Larynx, trachea, bronchial tree, and lungs.

6. What is the function of the nasal cavity? Filter air, conduct air to pharynx where mucous lining filters and moistens air. The mucous also entraps dust and other small particles that entered with air.

7. What does mucous do? Filters and moistens air, also entraps dust and other particles that enter with air and is pushed by cilia towards the pharynx where it is swallowed and digested by stomach.

8. What is the function of the larynx? Conduct air in and out of trachea; prevent foreign objects from entering trachea. Also houses vocal cords.

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

10. What is laryngitis? Hoarseness or loss of voice, mucous membrane becomes inflamed and can cause obstruction of airway.

11. What is a bronchoscopy? 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 _________. Reduce the weight of skull and resonant chambers that affect quality of voice.

13. What is found within the trachea that prevents it from collapsing and blocking the airway? 20 ‘C’-shaped pieces of cartilages.

14. What is inspiration? Occurs when pressure inside alveoli decreases and atmospheric pressure is greater.

15. What is tidal volume? Amount of air that enter or leaves lungs.