Respiratory system

Question 1

what are the parts of the respiratory system

Answer 1

• nose
• lungs
• windpipe
• bronchi
• ribcage
• diaphragm

Question 2

what are the functions about the nose

Answer 2

• air enters the system through the nose or the mouth

- the nose contains nasal hair that traps dust and dirt from inhaled air

Question 3

what are the functions about the windpipe

Answer 3

• it is a hollow tube that brings the air from the nose or the bronchi
• the mucus in the windpipe prevents dirt and dust from entering the lungs.
• cells in the windpipe secrets mucus
• the hair like sturctures are found in the windpipe helps to sweep the mucus that contains dust and harmful substances
• the mucus is later removed by spitting or swallowing it into the stomach

Question 4

what are the functions about the bronchi

Answer 4

• the windpipe branches two tubes called the bronchi

- the bronchi will carry air from the windpipe to the air sacs on the lungs

Question 5

what are the functions about the lungs

Answer 5

• it contains many air sacs surrounded by the blood vessels
• oxygen moves from the lungs and into the blood stream ( inhaled air )
• carbon dioxide moves from the blood stream into the lungs ( exhaled air )

Question 6

what are the functions about the ribcage

Answer 6

• it protects the lungs and heart

- it also assists in the expansion and contraction of the lungs

Question 7

what are the functions about the diaphragm

Answer 7

• it is a muscular sheet below the ribcage
• it contracts to allow air to enter the lungs
• it relaxes to allow the air to leave the lungs

Question 8

what happens when we breathe in

Answer 8

• the volume of the lungs increases
• the ribcage moves upwards and outwards
• the diaphragm contracts and moves downwards

Question 9

what happens when we breathe out

Answer 9

• air is exhaled
• the ribcage moves inwards and downwards
• the diaphragm relaxes and moves upwards
• the volume of the lungs decreases