What is the job of the vascular system
To deliver oxygen and remove waste products through the use of blood vessels
State the journey of blood flow through the vascular system
Heart(vena cava)-Vein-Venule-capillaries-arteriolar-artery- heart(aorta)
Describe arteries
Carry blood away from the heart Thick elastic muscle Small lumen Pulse action High blood pressure
Describe capillaries
One cell thick
Semi permeable membrane
Allowed gasses to pass through (o2 and co2)
Describe veins
Carry blood back to the heart
Has valves to stop backflow
Large lumen
Low blood pressure
What is blood pressure
The force exerted by the blood against the vessel wall
What is systolic pressure
When the ventricles are contracting
Diastolic pressure
When the ventricles are relaxing
What is haemoglobin?
-
What is oxyhemoglobin
When oxygen and haemoglobin bind
What is the bohr shift
When the body becomes less saturated in order to dissociate with oxygen fasterso it’s more available to the muscle
What is vascular schunting
The redistribution of blood during exercise
Where does the majority of blood go during exercise
Skeletal muscle
Where does most of the blood shift from during exercise
The digestive system
What is a-vo2 diff
The difference in the amount of oxygen in arterial blood vs venous blood
What is arterial blood
Blood that is traveling to the tissues
What is venous blood
Blood that is leaving the tissue
