The blood

Question 1

red blood cells carry

Answer 1

oxygen

Question 2

they have (3) and why (3)

Answer 2

large surface area, absorb oxygen
no nucleus, more room to carry oxygen
contain (red pigement) haemoglobin

Question 3

what does haemoglobin do in the lungs?

Answer 3

combines with oxygen to form oxyhaemoglobin

Question 4

what does haemoglobin do in body tissues?

Answer 4

splits to release oxygen to the cells

oxygen and haemoglobin

Question 5

what 4 things is the blood made up of?

Answer 5

red blood cells
white blood cells
platelets
plasma

Question 6

what do the white blood cells do>3

Answer 6

1defend against disease (against unwanted 2microorganisms)

3produce antibodies and antitoxins (to neutralise any toxins produced by micro-organisms)

Question 7

do white blood cells have a nucleus?

Answer 7

YES

Question 8

what do platelets do>2

Answer 8

help blood clot

stop microorganisms from getting in

Question 9

what happens if there is a lack of platelets?

Answer 9

excessive bleeding

bruising

Question 10

do platelets have a nucleus?

Answer 10

NO

Question 11

What does the plasma do?

Answer 11

plasma is the liquid that carries everything in the blood..

Question 12

what does the plasma carry?

Answer 12

red and white blood cells
glucose and amino acids
urea
hormones 
carbon dioxide from organs to lungs 
antibodies and antitoxins