Heart, blood & vessels Flashcards
Cardiovascular system?
The heart, blood vessels and blood
3 functions of cardiovascular system?
- transport
- clotting
- temperature regulation
Atria?
upper chambers of heart where blood enters
2
Ventricles?
lower chambers of heart where blood exits
2
Oxygenated blood?
blood containing a high concentration of oxygen
Deoxygenated blood?
blood containing a low concentration of oxygen
The route of blood?
- right atrium
- tricuspid valve
- right ventricle
- semi-lunar valve
- pulmonary artery
- lungs
- pulmonary vein
- left atrium
- bicuspid valve
- left ventricle
- semi lunar valve
- aorta
- around body
- vena cava
3 types of blood vessel?
- arteries
- veins
- capillaries
Arteries direction of blood? speed of blood? pressure of blood? walls?
blood carried Away from the heart
blood travels at high speed
high blood pressure
thick muscular walls and small lumens
4 components of blood?
Red blood cells
White blood cells
Platelets
Plasma
Red blood cells?
contain haemoglobin > binds to O2 > carries O2
White blood cells?
part of immune system
fight disease & infection
travel in blood
Platelets?
clot blood & scab to seal wounds
stops excessive bleeding
Plasma?
watery fluid > makes blood liquid
makes it flow
Stroke volume?
(SV)
amount of blood pumped out of the heart per beat
