Respiratory Revision

Question 1

Explain Inhalation.

Answer 1

The intercostal and diaphragm contract, expanding the chest cavity and allowing the lungs to expand. Air is pulled into the lungs.

Question 2

Explain Expiration.

Answer 2

Intercostal and Diaphragm relax, the chest and lungs recoil, the air is pushed out due to increased pressure within the lungs.

Question 3

What is the air flow through the respiratory tract?

Answer 3

Nose - Trachea - Bronchus - Bronchiole - Aveoli.

Question 4

Alveolar Adaptations for gas exchange?

Answer 4

1. Close blood supply
2. One cell thick
3. Large Surface area
4. Moist

Question 5

Chemical that increases during exercise?

Answer 5

CO2

Question 6

Receptors that detect CO2?

Answer 6

Chemo - Receptors

Question 7

Respiratory Centre of the brain?

Answer 7

Medulla

Question 8

Muscles that contract?

Answer 8

Intercostal and diaphragm.

Question 9

Description of Asthma?

Answer 9

Inflammation of the bronchus, preventing air from reaching the lungs. Causing shortness of breath.

Question 10

Triggers of Asthma?

Answer 10

Cold weather, exercise, air pollution, dust and animal hairs.

Question 11

Predisposing factors for asthma?

Answer 11

-Family history
-Environmental/pollution
-Pre-existing condition like allergies
-Smoking

Question 12

Category for Asthma?

Answer 12

Immune Disorder

Question 13

Describe the protective mechanisms for the respiratory tract?

Answer 13

1. Cillia moves dust particles away from the lungs.
2. Mucus traps dust preventing them from reaching lung tissue.