Blood

Question 1

What the the fluid made up from?

Answer 1

Made up from cells, platelets and plasma.

Question 2

What do red blood cells do?

Answer 2

Transport oxygen from the lungs to all the cells in the body.

Question 3

What do white blood cells do?

Answer 3

Help to fight infection.

Question 4

What do platelets do?

Answer 4

Help the blood to clot at the sight of a wound.

Question 5

What does plasma do?

Answer 5

This is the liquid that carries everything about. E.G. Glucose is carried in the plasma.

Question 6

How is blood carried around the body?

Answer 6

In blood vessels

Question 7

What job does the Arteries do?

Answer 7

Carry blood AWAY from the heart.

Question 8

What job does the Capillaries do?

Answer 8

Exchange materials at the body’s tissue.

Question 9

What job does do the veins do?

Answer 9

Carry blood TO the heart.

Question 10

What type of pressure do the Arteries carry blood at?

Answer 10

HIGH.

Question 11

What are the Arteries walls?

Answer 11

Strong and Elastic as the heart pumps blood out at high pressure.

Question 12

What is a lumen?

Answer 12

The hole in the center of the Arteries

Question 13

Arteries walls are…

Answer 13

Thick. They contain thick layers of muscle to make them strong.

Question 14

When you press down on an artery you can feel a pulse, why is this?

Answer 14

The high pressure means that if you press down lightly on an artery, you can feel a pulse each time the heart beats.

Question 15

How big are Capillaries?

Answer 15

They are VERY small.

Question 16

What do Arteries eventually branch into?

Answer 16

Capillaries.

Question 17

Can you see Capillaries with the human eyes?

Answer 17

No.

Question 18

Capillaries carry blood really close to every cells in the body to exchange…

Answer 18

Substances with them.

Question 19

What types of walls do Capillaries have?

Answer 19

They have permable walls so substances can come in and out.

Question 20

What do the Capillaries do?

Answer 20

They supply the body with nutrients and oxygen and they take out the Carbon Dixoide.

Question 21

Capillaries walls are ____ cells thick?

Answer 21

One.

Question 22

Where do veins take the blood?

Answer 22

Back to the heart.

Question 23

Capillaries eventually join up to form…

Answer 23

Veins.

Question 24

Blood in the veins is ___ pressure so the walls don’t have to be as thick.

Answer 24

Lower.

Question 25

Veins have a small lumen. Why?

Answer 25

To help the blood flow.

Question 26

Veins have ___ to keep the blood flowing in the right direction.

Answer 26

Valves.