Circulatory System

Question 0

Veins

Answer 0

Carries blood to the heart. The blood pressure is low

Question 1

Arteries

Answer 1

Carry blood away from the heart. Very thick walls and high pressure.

Question 2

Capillaries

Answer 2

Are very tiny and are found between arteries and veins and have very thin walls.

Question 3

Platelets

Answer 3

Are formed in the bone marrow when large cells are broken down into smaller pieces.

Question 4

White blood cells

Answer 4

Are also formed in bone marrow. They fight off infections and diseases.

Question 5

Red blood cells

Answer 5

Are made also in bone marrow they contain a red dye called haemoglobin. Red blood cells carry oxygen.

Question 6

Plasma

Answer 6

Is the liquid part of the blood and his mostly made of water .

Question 7

The heart

Answer 7

Is about the size of a clenched fist. It is made up of a muscle called cardiac muscle which does not tire easily and is very strong . The average heartbeat is around 75 beats a minute. When resting, the heartbeat decreases and when excersising it can increase .

Question 8

Vena cava

Answer 8

Takes deoxygenated blood from the body to the right atrium.

Question 9

Pulmonary artery

Answer 9

Takes oxygenated blood from the right ventricle to the lungs

Question 10

Aorta

Answer 10

Takes oxygenated blood from the left ventricle to the body.

Question 11

Pulmonary vein

Answer 11

Takes oxygenated from the lungs to the left atrium.