Circulation

Question 1

Red blood cells

Answer 1

Haemoglobin to carry oxygen, no nucleus, disc shaped, made in the bone marrow.

Question 2

White blood cells

Answer 2

Fight infections, produce antibodies, nucleus is present, no definite shape, less white blood cells than red blood cells.

Question 3

Platelets

Answer 3

Blood clotting, no nucleus, fragments of cells, less platelets of red blood cells but more than white blood cells.

Question 4

Functions of blood

Answer 4

Transport, defence and clotting.

Question 5

Transport in blood

Answer 5

The transport of blood is red blood cells and plasma.

Question 6

Three types of blood vessels

Answer 6

Arteries, veins and capillaries.

Question 7

Arteries

Answer 7

Carry blood away from the heart.

Question 8

Veins

Answer 8

Carry blood back to the heart.

Question 9

Capillaries

Answer 9

Connect arteries and veins

Question 10

Cardiac muscle

Answer 10

It doesn’t fatigue or tire

Question 11

Four chambers in the heart

Answer 11

Right and left atria and the right and left ventricles.

Question 12

Left ventricle has a thicker wall because

Answer 12

It has to travel further than the right ventricle.

Question 13

Normal body temperature

Answer 13

37 degrees

Question 14

Resting pulse rate

Answer 14

How many times your heart beats without exercise

Question 15

Heart disease is prevented by

Answer 15

Healthy eating

Question 16

Exercise is good because

Answer 16

It strengthens your body

Question 17

The effect of exercise on the heart rate is

Answer 17

It speeds up.

Question 18

Circulatory system

Answer 18

The system that circulates blood through the body.