Gas exchange

Question 1

Alevoli

Answer 1

Tiny air sacs in the lungs serve as the gaseous exchange surface

Question 2

Bronchi

Answer 2

The two airways branching from the trachea that lead into the lungs

Question 3

Bronchioles

Answer 3

The small airways branching from the bronchi in each lung

Question 4

Capillaries

Answer 4

Thin, narrow blood vessels that are the site of exchange of substances between the blood and the tissues

Question 5

Coronary Heart Disease

Answer 5

A disease caused by the build-up of fatty deposits inside the coronary arteries, narrowing them and reducing blood flow to the heart tissue. Smoking increases the risk of coronary heart disease

Question 6

Diaphragm

Answer 6

The muscle separating the thorax and the abdomen

Question 7

Intercostal muscles

Answer 7

Groups of muscles situated between the ribs. They are responsible for the movement of the ribs during breathing

Question 8

Pleural membranes

Answer 8

The airtight membranes covering the lungs and the chest wall

Question 9

Spongy mesophyll

Answer 9

A tissue found in plant leaves that is specialised for gas exchange

Question 10

Stomata

Answer 10

Small holes found on the surface of a leaf that allow carbon dioxide and oxygen
to diffuse in and out of the leaf for photosynthesis. They also control water loss

Question 11

Trachea

Answer 11

The windpipe connecting the lungs to the mouth and nose