Bio - respiration and human transport

Question 1

define respiration

Answer 1

Respiration is a chemical reaction in cells that releases energy.

Question 2

Define breathing

Answer 2

Breathing is the movement of air into and out of the lungs

Question 3

Define gas exchange

Answer 3

Gas exchange is the diffusion of oxygen into the blood and carbon dioxide out at the alveoli.

Question 4

What are the parts of the human gas exchange system?

Answer 4

Lungs, diaphragm, intercostal muscles, larynx, trachea, bronchi, bronchioles, alveoli, and capillaries.

Question 5

How do the ribs, intercostal muscles, and diaphragm help with breathing?

Answer 5

They change chest volume and pressure through inhalation and exhalation

Question 6

What does cartilage do in the trachea?

Answer 6

Keeps the airway open so air can pass easily.

Question 7

How do goblet cells and cilia protect the lungs?

Answer 7

Goblet cells make mucus to trap dirt; cilia move it out.