Year 9-Landmark 1

Question 1

What are the names of the two exit points of blood?

Answer 1

Pulmonary artery and aorta

The pulmonary artery contains deoxygenated blood having come from the body while the aorta contains oxygenated blood having come from the lungs

Question 2

Which vein contains deoxygenated blood

Answer 2

Pulmonary vein

Be saure to say in exam questions that veins take blood to the heart instead of it carries deoxygenated blood

Question 3

Which blood vessel has valves?

Answer 3

Veins

This is to stop blood from going backwards this ensures it always goes towards the heart

Question 4

How many chambers is the heart made up of?

Answer 4

4

These are the right and left atria and the left and right ventricles

Question 5

What is the name of the hearts blood supply?

Answer 5

Coronary artery

These arteries branch of the aorta and makes sure the heart gets all the oxygen and nutrietns it needs

Question 6

Which blood vessel has the largest lumen?

Answer 6

Footnote

Veins

Veins are has a very large lumen but small walls made of elastic fibres and smooth muscles

Question 7

Which artery contains oxygenated blood

Answer 7

Pulmonary arteries

Be saure to say in exam questions that arteries take blood away from the heart instead of it carries oxygenated blood

Question 8

Which blood vessel transports blood back to the heart?

Answer 8

Veins

Question 9

What are the top chambers called?

Answer 9

The atria

Singular: Atrium

Question 10

Which blood vessel is at the highest pressure?

Answer 10

Arteries

Takes blood away from the heart

Question 11

What are the names of the two entry points of blood?

Answer 11

Vena Carva and the pulmonary vein

The vena carva contains deoxygenated blood having come from the body while the pulmonary vein contains oxygenated blood having come from the lungs

Question 12

What is the name of the space in the middle of the blood vessel?

Answer 12

Lumen

Question 13

Why are capillaries walls only a cell thick?

Answer 13

So diffusion can take place

Lower blood pressure so there is more time for substances to diffuse in and out

Question 14

What is the leafs function?

Answer 14

To produce photosynthesis

Question 15

What is the photosynthesis equation?

Answer 15

CO2 + H2O → CHO + O2

Carbon dioxide+water→glucose+oxygen

Question 16

How many loops does the circulatory system have?

Answer 16

2

1 is oxygenated blood and the other is deoxygenated

Question 17

Where does phototsynthesis take place in the leaf?

Answer 17

Palisade mesophyl

Question 18

What are the bottom chambers called?

Answer 18

Ventricles

Question 19

After leaving the heart what is the order of blood vessels?

Answer 19

Arteries, Capillaries and Veins

Question 20

How often on average does the heart beat?

Answer 20

70 times a minute

this is over 100,000 times a day

Question 21

True or False

Do all blood vessels link up?

Answer 21

True

Question 22

How many valves are there in the heart?

Answer 22

4

These are to make sure blood is moving in the right direction

Question 23

What is the smallest blood vessel?

Answer 23

Capillaries

This means that they come really close to all the cells in our body so they can diffuse substances to our cells (oxygen & nutrients) and waste products (carbon dioxide)

Question 24

Calculate the rate of blood

2,560ml of blood passes through the aorta in 8 minutes. Calculate the rate of blood flow through the aorta in ml/min

Answer 24

320 ml/min

2,560/8=320