the heart and circulatory system (6) Flashcards
what is the circulatory system made of
heart
arteries
arterioles
capillaries
venules
veins
blood
what is the purpose of the circulatory system
to move blood around the body
supply nutrients to all cells
supply oxygen and remove carbon dioxide
circulate heat
carry white blood cells to fight infection
carry platelets that form clots to heal wounds
what are red blood cells
they carry fresh oxygen around the body
what are white blood cells
they protect you from illness and disease
what are platelets
tiny blood cells that help your body form clots to stop bleeding
what is plasma
the largest part of your blood
what are arteries
carry blood away from the heart
what are arterioles
The arteries carrying the blood branch out into smaller vessels
what are capillaries
a network of tiny blood vessels
what are venules
a small vein
what are veins
one type of blood vessel that has the job of carrying deoxygenated blood away from the body’s tissues and back to the heart
what are valves
lets something in and keeps it there by closing
what is the job of the heart
acts as a pump
4 chambers
