The Roles Of The Components In Performing The Functions Of The Respiratory System B2.8

Question 1

Where is the respiratory system largely contained?

Answer 1

Within the thorax or chest cavity

Question 2

What is the basis of the respiratory system?

Answer 2

The basis of gas exchange in humans

Question 3

What are the components of the respiratory system?

Answer 3

• 2 lungs
• mouth and nose leading to the trachea
• trachea splits into 2 bronchi, one leading into each lung
• bronchi divide into bronchioles and then alveoli
• pleural membrane
• ribs
• intercostal muscles
• diaphragm

Question 4

What is the alveoli?

Answer 4

Small air filled sacs that have walls consisting of a single layer of thin epithelial cells. They are the site for gas exchange

Question 5

Inspiration involves contraction of two sets of muscles:

Answer 5

• diaphragm contracts, which causes it to move down
• the external intercostal muscle contracts, which causes the ribs to move up and outwards