Chapter 5

Question 1

Work of respiratory system can be divided into four parts (4)

Answer 1

1. Ventilation
2. Distribution
3. Diffusion
4. Perfusion

Question 2

What are the four primary functions of the respiratory system

Answer 2

1. Oxygen-carbon dioxide exchange
2. Regulation of acid-base balance
3. Body temperature regulation
4. Voice production

Question 3

Describe the function of the three basic defense mechanisms of the respiratory system

Answer 3

1. Nasal cavity
2. Protective reflexes
3. Mucociliary clearance

Question 4

Passageways include (7)

Answer 4

1 Nostrils
2 Nasal cavity
3 Pharynx
4 Larynx
5 Trachea
6 Bronchi
7 Bronchioles

Question 5

Work of respiratory system can be divided into four parts

Answer 5

1 Ventilation
2 Distribution
3 Diffusion
4 Perfusion

Question 6

Nasal Cavity

Answer 6

Turbinates of the nasal cavity provide a large surface area for warming and humidifying inspired air. Hair also helps to filter out larger particulate matter.

Question 7

Protective reflexes

Answer 7

Cough, sneeze, and maybe reverse sneeze respond to stimulation of receptors on the surface of air passageways to forcefully expel foreign material. Laryngospasm and bronchospasm help prevent introduction of foreign material into the lung tissue

Question 8

Mucociliary Clearance

Answer 8

Layer of mucus secreted onto the surface of the epithelial lining of the respiratory tract helps to trap foreign debris that enter the respiratory passages.

Question 9

What are the three important principles of respiratory therapeutics

Answer 9

1. Control of secretions
2. Control of reflexes
3. Maintenance of normal airflow