Year 8 ~ The human Body

Question 1

What components can be found in blood

Answer 1

Oxygen, platelets, white blood cells, plasma, haemoglobin, red blood cells

Question 2

White blood cells are

Answer 2

Large and squishy when fighting a virus they engulf the bad cells and kill them

Question 3

What is good about platelets

Answer 3

Like oats they can clump together to form a clot and stop bleeding

Question 4

Where are red blood cells made

Answer 4

Inside bone marrow then they see pout through your porous bones into the bloodstream

Question 5

Oxygen binds to haemoglobin and red blood cells to form what

Answer 5

Oxyhaemoglobin

Question 6

What percentage of your blood is plasma

Answer 6

55%

Question 7

White blood cells destroy what

Answer 7

Pathogens which cause diseases

Question 8

What was the percentage of your blood is red blood cells

Answer 8

44%

Question 9

Plasma…

Answer 9

Contains water and is made in the liver

Question 10

What percentage of your blood is white blood cells and platelets

Answer 10

1%

Question 11

Why do we need a circulatory system

Answer 11

We need a circulatory system because it delivers oxygen around the body to the organs which require that to operate and they perform basic functions we need to survive

Question 12

What does the heart consist of

Answer 12

The heart consists of a pump (the heart) blood vessels and blood

Question 13

Blood grows from the heart to where?

Answer 13

The lungs

Question 14

What does the right side of the heart do

Answer 14

pushes blood to the lungs

Question 15

what does the left side of the heart do

Answer 15

pushes blood to all organs in the body except the lungs

Question 16

why does the left side of the heart have a thicker muscle wall?

Answer 16

the left side of the heat has a thicker muscle wall because it has to pump blood all around the body which requires a greater force

Question 17

what are heart chambers called?

Answer 17

ventricles

Question 18

why are heart valves important?

Answer 18

because the make sure blood doesnt go backwards

Question 19

what sets the rhythm of the beating in the heart and when?

Answer 19

a pacemaker sets the beating of the heart and is formed about 6 weeks after the ovum is fertilised

Question 20

what do blood vessels do ?

Answer 20

blood vessels carry the blood around the body to each organ and take it back to the heart

Question 21

what gas diffuses into the cells from the bloodstream

Answer 21

carbon dioxide

Question 22

what diffuses out from the cells in blood ?

Answer 22

Oxygen and Glucose

Question 23

arteries carry blood ______ from the _______.

Answer 23

Away, heart