The circulatory
system
What is its function?
structure
function
Heart
to pump blood through the body
Blood Vessels
to transfer blood throughout the body
Blood
Carries nutrients, oxygen and water and also waste
products such as carbon dioxide
The three types of blood vessels are called
areteries, veins and capillaries
Arteries
Veins
Capillaries
blood rich in oxygen
blood poor in
oxygen
join the arteries and
the veins
when our heart CONTRACTS - blood flows away from the
heart
when our heart RELAXES - blood flows towards the heart
alveoli
oxygen
bronichioles
blood
s
alveoli
diaphgram
trachea
contracts
relaxes