Respirtory System

Question 1

What is the function of the respiratory system?

Answer 1

Oxygenate, remove CO2 from the lungs

Question 2

What are the alveoli?

Answer 2

Tiny sac like structures where gas exchange takes place

Question 3

What are the main muscles of the respiratory system?

Answer 3

Diaphragm- sheet of muscle that deprecated the thorax from the abdomen
Intercostal- both internal and external situated between the ribs

Question 4

Describe the physical process of breathing

Answer 4

At rest the elastic recoil of the lungs pulls the chest cavity downwards and the diaphragm is relaxed, so the pressure from the contents of the abdomen pushes the diaphragm up into the chest cavity.
During breathing in, the diaphragm contacts and pulls downs wards. At the same time the external intercostal contract and lift up the front of the chest to increase chest volume.
Expiration is passive during quiet breathing- elastic recoil

Question 5

What is the tidal volume

Answer 5

The volume of air that is moved into and out of the lungs during quiet breathing

Question 6

What is the minute volume?

Answer 6

The amount of air moved in and out of the lungs in 1 minute

Question 7

What is vital capacity

Answer 7

The amount of air that can be expired following a maximum inspiratory effort