circulatory system-blood

Question 1

plasma

Answer 1

yellow liquid part of blood that transports substances around the body

Question 2

6 examples of what plasma carries

Answer 2

-carbon dioxide
-urea
-soluble digestion products,
-hormones
-proteins
-red blood cells
-white blood cells
-antitoxins/antibodies
-platelets

Question 3

role of plasma

Answer 3

to carry components of blood around the body

Question 4

red blood cell role

Answer 4

carry oxygen from the lungs to body cells

Question 5

haemoglobin

Answer 5

contains haemoglobin that binds to oxygen in the lungs to form oxyhaemoglobin

Question 6

no nucleus

Answer 6

more room for oxygen and haemoglobin

Question 7

biconcave disc shape

Answer 7

increase surface area to increase diffusion rate

Question 8

white blood cell role

Answer 8

fight infection and disease

Question 9

what do white blood cells perfom/produce?

Answer 9

phagocytosis
antitoxins
antibodies

Question 10

difference between red and white blood cells

Answer 10

white contains a nucleus

Question 11

platelets

Answer 11

tiny fragments of cells

Question 12

role of platelets

Answer 12

help blood clot

Question 13

what do platelets prevent?

Answer 13

blood loss, microorganisms getting in through wounds

Question 14

lack of platelets

Answer 14

excessive bleeding and bruising

Question 15

how are red blood cells adapted?

Answer 15

-biconcave shape
-haemoglobin
-no nucleus

Question 16

what is blood?

Answer 16

a tissue containing blood cells, platelets and plasma