The Circulatory System Flashcards
What is double circulation?
Two transport systems in the body, one to carry blood TO the heart
Other to carry blood AWAY from the heart
What happens to oxygenated blood?
It is pumped to the heart from lungs and to the body from the heart
What happens to de oxygenated blood?
It is pumped from the heart to the lungs and from the body back to the heart
What do veins do
Carry blood to heart
What do arteries do
Carry blood away from the heart
What are capillaries
Tiny blood vessels found near organs and tissues of the body that exchange substances with the cells
Eg glucose
What does the right side of the heart do
Pumps low O2 blood to the lungs
What does the left side of the heart do?
Pumps high O2 blood to the body
What do white blood cells do?
Fight infection
What do platelets do?
Help to clot blood
What does plasma do?
Holds dissolved substances, glucose (taken from small intestine to body organs) , co2 and waste products
(Like urea from kidney )
How are red blood cells adapted
- No nucleus- no room for haemoglobin
- Special shape with lowered centre
- Greater surface area to absorb gas
What is haemoglobin?
Substance which gains oxygen from the lungs to form OXYhaemoglobin.
Then released oxygen into cells
What is the reaction of OXYhaemoglobin?
Reversible
What does the circulation system contain
Blood vessels
Heart
Blood
