Chapter 7 - the Breathing System

Question 1

What is inhaling?

Answer 1

Breathing in

Question 2

What is exhaling?

Answer 2

Breathing out

Question 3

What happens during breathing?

Answer 3

1. We breath oxygen into our lungs
2. The oxygen passes from our lungs into our bloodstream
3. The blood carries the oxygen to the cells for Respiration
4. CO2 and H2O are waste products of respiration
5. They passes back from cells to bloodstream to lungs
6. The lungs breath out the C02 and water vapour

Question 4

What are the functions of the breathing system?

Answer 4

• To take in oxygen gas for respiration
• To remove waste carbon dioxide gas
• to remove waste water vapour

Question 5

What is the larynx?

Answer 5

• voice box

- responsible for sound

Question 6

What is the lungs?

Answer 6

The breathing organ

Question 7

What is the intercostal muscle?

Answer 7

Causes the rib cage to move up and down during breathing

Question 8

What is the diaphram?

Answer 8

A sheet of muscle which moves up and down during breathing causing air to move in and out of the lungs

Question 9

What is the trachea?

Answer 9

Allows air to pass in and out of the lungs

Question 10

What are the rings of cartilage?

Answer 10

Keep the air tubes open

Question 11

What is the brochus?

Answer 11

Keep the air tubes open

Question 12

What are the bronchioles?

Answer 12

Thin tubes that carry air within the lungs

Question 13

What are alveoli?

Answer 13

Tiny air sacs covered by a network of narrow blood vessels

Question 14

What is gaseous exchange?

Answer 14

Gaseous exchange occurs when nitrogen from the air is swapped with carbon dioxide from the body

Question 15

What are the dangers of smoking?

Answer 15

• tar in tobacco damages the lining of the bronchioles ; bronchitis
• nicotine damages heart and blood vessels
• lung cancer
• carbon monoxide causes heart strain