Lungs

Question 1

What routed does air take to get to the lungs?

Answer 1

mouth
trachea
broncus
bronchioles
alveoli

Question 2

What happens within the alveoli ?

Answer 2

Gas exchange

Question 3

What are the features of the alveoli?

Answer 3

moist thin walls = short diffusion pathway
an abundance of alveoli = increase surface area
many tiny blood vessels = maximise diffusion

Question 4

What is a blood capillary?

Answer 4

Tiny blood vessels

Question 5

What is a rig of cartilage?

Answer 5

c-shaped rings

Question 6

What is a mucus secreting cell?

Answer 6

cells the release slimy liquid (mucus)

Question 7

What is the cilia?

Answer 7

tiny hairs

Question 8

What are the bronchioles?

Answer 8

tiny tubes

Question 9

What is the alveoli?

Answer 9

tiny air sacks at the end of the bronchioles

Question 10

What is the trachea?

Answer 10

the wind pipe

Question 11

What is the purpose of the blood capillary?

Answer 11

they bring dissolved carbon and carry away dissolved oxygen

Question 12

What is the purpose of the rings of cartilage?

Answer 12

to keep the trachea open

Question 13

What is the purpose of the mucus secreting cells?

Answer 13

to keep the surfaces moist and trap dust particles

Question 14

What is the purpose of the cilia?

Answer 14

waft the mucus up to the nose and mouth

Question 15

What is the purpose of the bronchioles?

Answer 15

carry air to/from the alveoli

Question 16

What is the purpose of the alveoli?

Answer 16

This is where oxygen is absorbed and carbon dioxide is lost by the blood.
They also release a slippery liquid to prevent the lungs from rubbing against the ribs.

Question 17

What is the purpose of the trachea?

Answer 17

To carry air from the throat to the lungs. Divides into tow small tubes called the left and right broncus