Circulatory System Flashcards
What is the main function of the circulatory system?
To transport oxygen and nutrients
What are the 4 components blood is made up of
Plasma
Red blood cells
White blood cells
Platelets
Name 2 functions of blood
- Transports substances around the body
- Defence against diseases
What is the function of plasma
To transport dissolved chemicals and heat
around the body
What are function of RED blood cells
Contain a protein pigment (haemoglobin). Haemoglobin helps carry to oxygen around the body
What are the function of WHITE blood cells
White blood cells fight infection
What are the functions of platelets
Platelets form blood clots e.g. a scab.
Name 2 purposes of blood clotting
- To prevent blood loss.
- To prevent the entry of microorganisms into the body.
What are the functions of arteries
carry blood away from the heart.
What are the functions of veins
carry blood towards the heart.
What are the functions of capillaries
connect arteries and veins.
Which side of the heart contains oxygenated blood
Left
What does the aorta do
Carries oxygenated blood to rest of body.
What does the pulmonary vein do
Carries oxygenated blood to left atria.
What does the pulmonary artery do
Carries deoxygenated blood to the lungs.