Human Circulatory System

Question 0

Blood

Answer 0

Plasma. Blood cells

Question 1

Blood vessels

Answer 1

Arteries. Veins. Capillaries

Question 2

Red blood cells

Answer 2

Has haemoglobin to carry oxygen
No nucleus
Disc shaped
Made in the bone marrow

Question 3

Haemoglobin

Answer 3

Carry oxygen

Question 4

White blood cells

Answer 4

Fight infection
Produce antibodies
Nucleus present
No definite shape

Question 5

Platelets

Answer 5

Blood clotting
No nucleus
Fragments of cells

Question 6

Plasma

Answer 6

90% water
Carries platelets and red and white blood cells
Carries dissolved substance (10%) e.g glucose, proteins, urea

Question 7

Functions of blood

Answer 7

Transport, defence against disease, clotting

Question 8

Cardiac muscle

Answer 8

It doesn’t fatigue or tire

Question 9

The heart

Answer 9

Is a pump located slightly to the left

Question 10

Blood heart

Answer 10

Ärteries bring blood Äway from the heart. Veins bring blood to the heart

Question 11

Why exercise

Answer 11

1. Strengthens our lungs
2. strengthens our hearts
3. Strengthens our other muscles
4. Reduces weight

Question 12

Heart disease

Answer 12

Small arteries on the way to the heart become clogged with fat

• Reduce the risk of heart disease:
  2. Exercise regularly
  3. Eat a healthy diet (less fat and salt)
  4. Don’t smoke