atrium release oxygen
the heart releases 2 types of blood cells, what are they?
red
blue
white
red and white
red and blue
there are 5 blood vessels
name the blood vessels
arteries
veins
heart
capillaries
capillaries are 1cell thick
what muscle is the heart made of
cardiac
skeletal
smooth
for the circulatory system to work, the blood in and the must be kept
what are the different heart diseases
cholesterol
diabeties
angina
cholesterol is in the artery
white blood cells supply protection for the body