Soc 16 Structure Of The Blood Vessels And Blood Distribution Flashcards
What is vasodilation?
When veins swell up and widen to allow increased blood flow
What is vasoconstriction?
When veins shrink down and narrow to decrease blood flow
What is a vein?
A tube that carries blood back to the heart
What is an artery?
A muscular tube that carries blood away from the heart
What is vascular shunting?
A process that increases blood flow to active areas during exercise by diverting blood away from inactive areas
What is thrombokinase?
A substance that is involved in blood clotting
What is serotonin?
A hormone that triggers the clotting progress
What is erythrocyte another name for?
A Red blood cell
What is leukocyte another name for?
A white blood cell
Why are capillaries one cell thick?
To allow for diffusion in them
Describe the walls of an artery
The wall of an artery is thick with a lot of muscle and elastic fibres.
Describe the walls of a vein
The wall of a vein is thin with just a little elastic fibre
What are the 3 blood vessels?
Capillaries,veins and arteries
