what is the name of the liquid part of the blood? what is it's function?

describe a red blood cell

what are the 2 types of white blood cell?

describe a lymphocyte

describe phageocytes

what is the function of platelets?

what does blood clotting prevent from happening to the cut?

what is oxyhaemoglobin?

what happens when there is low concentration in the tissues?

how is a red blood cell adapted to carry blood?

what happens in phagocytosis?

what percentage of white blood cells are phagocytes?

what is an antibody?

what is an antigen?

once an antibody has stuck to the surface of an antigen, give 3 ways it can destroy it

what is a memory cell?

how does the memory cell keep us immune from the disease?

how does a vaccination work?

we need a circulatory system for...

DOUBLE CIRCULATION CONSISTS OF:
pulmonary circulation
systemic circulation

double circulation is more efficient because

what do the following vessels do?
a)arteries?
b)veins?
c)capillaries?

what do the following vessels do?
a)arteries?
b)veins?
c)capillaries?

what allows the heart to pump blood around the body at different speeds and pressures?

a) what divides the heart into two section?
b) name the 2 sections?

why is the wall of the left ventricle thicker than the wall of the right ventricle?

why are the atria walls thin?

what is normal heart rate?

what happens to our heart rate when we excersise and why?

what happens to heart rate when we sleep?

what does the accelerator nerve do?
what does the decelerator nerve do

why does venous blood have lower pressure than arterial blood?