Circulatory system

Question 1

what is the circulatory system

Answer 1

the circulatory system is how nutrients and waste products that are carried in our body

Question 2

the circulatory system….

Answer 2

affects our health

Question 3

why does blood need to move smoothly ?

Answer 3

• so that oxygen and food are carried around the body

- carbon dioxide and waste products are removed from the body

Question 4

what are the parts of the circulatory system

Answer 4

• heart
• blood
• blood vessels

Question 5

what is the heart

Answer 5

the heart is a muscular pump that pumps blood around the body

Question 6

what is blood

Answer 6

blood is a liquid that transports substances ( eg. oxygen , digested food and carbon dioxide )

Question 7

what is blood vessels

Answer 7

blood vessels is a network of tubes that carry blood around the body

Question 8

what are the 3 types of blood vessels

Answer 8

• arteries
• veins
• capillaries

Question 9

what is the function of arteries

Answer 9

arteries carries blood from the heart

Question 10

what is the structure of arteries

Answer 10

it has a thick muscular wall to withstand the high blood pressure from the heart

Question 11

what is the function the veins

Answer 11

the veins carry blood towards the heart

Question 12

what is the structure of the veins

Answer 12

valves are present to ensure blood flows in one direction as blood flow is slow and may flow backwards

Question 13

what is the function of the capillary

Answer 13

• it supplies blood from the arteries to the body cells , organs and tissues
• it connects the arteries to the veins

Question 14

what is the structure of the capillary

Answer 14

• it is a one cell thick wall which allows efficient exchange of gases between the blood and capillars
• narrow vessel that only allows one red blood vessel to travel and one time