Circulatory System

Question 1

functions of the circulatory system

Answer 1

• transport oxygen food and waste to and from cells
• help fight infection
• transport heat from organs and muscles to the rest of the body

Question 2

tissue

Answer 2

a group of cells with a similar structure and function

Question 3

blood

Answer 3

a type of tissue because it is made up of similar cells with a similar function

Question 4

plasma

Answer 4

straw coloured liquid in which blood cells float , carries nutrients and heat

Question 5

red blood cells function, structure

Answer 5

carry oxygen to body cells

thickened rim, no nucleus

Question 6

white blood cells function, structure

Answer 6

• fight infection

- have a nucleus

Question 7

platelets function

Answer 7

clot blood when blood vessels are damaged

Question 8

artery function, wall

Answer 8

thick muscle wall, carry blood Away from the heart

Question 9

vein function and wall

Answer 9

thin muscle wall, carry blood to the heart

Question 10

capillary function and wall , and how it joins vessels

Answer 10

one cell thick, allow substances to pass in and out of blood (arteries break up into capillaries, capillaries join together into veins)

Question 11

vessels of the heart left to right

Answer 11

vena cava (from around the body)
pulmonary artery
aorta
pulmonary vein (oxygenated blood)

Question 12

the wall in the middle of the heart and function

Answer 12

septum , separates right and left sides of the heart

Question 13

the two types of chambers, which one is on top?

Answer 13

atrium on top, ventricle on bottom

Question 14

valve function

Answer 14

stops blood flowing backwards

Question 15

coronary arteries function

Answer 15

bring nutrients and oxygen to the heart

Question 16

interaction with other systems

Answer 16

• food absorbed from digestive system
• oxygen absorbed from respiratory system
• all cells of all system sreceive oxygen and food from blood

Question 17

how exercise increases heart rate

Answer 17

increase in movement needs 
increase in energy needs 
increase in rate of respiration needs 
increase in amount of glucose and oxygen supplied to cells needs 
increase in blood supply to cells needs 
increase in heart rate .