cardiovascular system Flashcards
what are the two key parts that the cardiovascular system is made up of?
- heart muscle
- blood vessles
what is the function of the cardiovascular system?
to pump oxygen rich blood around the body and remove waste gas carbon dioxide
what are the three main types of blood vessel?
- arteries
- veins
- blood capillarys
arteries
carry blood away from the heart
veins
carry blood into the heart
blood capillaries
efficient exchange of materials
what blood vessel would you expect to find a pulse?
arteries
what blood vessel undergoes gas exchange with the tissues?
capillaries
what is the protein in red blood cells that combines with oxygen to allow it to be carried around the body?
haemoglobin
what are the features of the artery?
- thicker muscular wall
- thicker muscular layer
- narrower channel
- no valves
- blood flows at high pressure
what pressure does blood flow at the artery?
high
what are the features at the vein?
- wider channel
- thinner muscular wall
- thinner muscular layer
- valves present
- blood flows at low pressure
what pressure does blood flow at the vein?
low
what is the order blood always flows at around the CV system?
arteries -> blood capillaries -> veins
what do the valves do?
prevent the backflow of blood
