blood and circulation

Question 1

what are the four main components of blood?

Answer 1

platelets
white blood cells
red blood cells
plasma

Question 2

what are white blood cells?

Answer 2

white blood cells are cells which kill bacteria and viruses and make antibodies

Question 3

what are red blood cells?

Answer 3

red blood cells are cells that carry oxygen to tissues all around your body

Question 4

what is plasma?

Answer 4

plasma is a yellow liquid that transports carbon dioxide urea, food molecules, hormones, platelets, amino acids and all your blood cells

Question 5

what are platelets?

Answer 5

platelets are fragments of cells that produce a network of protein threads which trap red blood cells and platelets to form a jelly like clot stopping you from bleeding to death and preventing microbes from entering a wound.

Question 6

what diseases are associated with each part of the blood?

Answer 6

red blood cells- anaemia (low iron so cant make haemoglobin)
white blood cells- leukemia
platelets- haemophillia

Question 7

state whether each part of the blood does or does not have a nucleus

Answer 7

red blood cells- no nucleus so theres more space to carry oxygen
white blood cells - there is a nucleus but it is large and has a strange shape
platelets- no nucleus

Question 8

what is most of the blood made up from?

Answer 8

plasma

Question 9

what is it called when oxygen binds to haemoglobin?

Answer 9

oxihaemoglobin

Question 10

what are the adaptations of the red blood cell?

Answer 10

biconcave shape to increase surface area
no nucleus so theres more space to carry oxygen
lots of haemoglobin so it can bind to more oxygen

Question 11

what are the factors that increase pulse rate?

Answer 11

adrenaline, excercising as more oxygen and glucose are needed in the muscle cells due to quicker contractions