Respiratory system

Question 1

Respiratory system

Answer 1

Intakes oxygen
released carbon dioxide waste

Question 2

Nasal cavity

Answer 2

space above and behind the nose
designed to warm , moister and filter the air

Question 3

Trachea/windpipe

Answer 3

Tubular passage to carry air from the mouth and nose towards the lungs
divides into bronchi

Question 4

Bronchi

Answer 4

pair of tubes that carry air from trachea to lungs

Question 5

Bronchioles

Answer 5

tubes extending from the bronchi, carrying air from the bronchi to the alveoli

Question 6

Alveoli

Answer 6

Around the bronchioles are 600 million alveoli which are tiny air sacks in each lung.
huge surface area for rapid gaseous exchange of oxygen and carbon dioxide

Question 7

Lungs

Answer 7

Made of elastic tissue to inhale and fill with air
optimised for gas exchange between our blood and the air

Question 8

Cardiac notch

Answer 8

Area in the left lung to accommodate the heart, hence why the right lung is bigger than the left

Question 9

External intercostals

Answer 9

contract to pull the rib-cage up when we breathe in

Question 10

internal intercostals

Answer 10

contract to pull the rib-cage down when we breathe out

Question 11

Diaphragm

Answer 11

muscle at the bottom of rib-cage
when breathing in, the diaphragm contracts and flattens, making chest cavity larger and drawing air in