Key Terminology In The Vascular Shunting Mechanism Flashcards
What is the vascular shunt mechanism
The vascular shunt mechanism is the redistribution is cardiac output (Q) during exercise
What bare the chemoreceptors
The chemoreceptors monitor chemical changes during exercise and during recovery. Eg) an increase in lactic acid
What are the baroreceptors
The baroreceptors monitor blood pressure increases during exercise and decreases during recovery
What are the proprioceptors
The proprioceptors monitor increases in muscular activity during exercise and decreases during recovery
What is the vasomotor control centre
The vasomotor control centre is situated in the brain and controls the vascular shunt mechanism
What is sympathetic stimulation
Sympathetic stimulation controls the diameter of the arteriole and the pre-capillary sphincter
What is the arteriole
A small artery that carries oxygenated blood to muscles and organs. It has a muscular middle layer to allow for vasoconstriction and vasodilation
What is the pre-capillary sphincter
The pre-capillary sphincter is a small ring shaped muscle between an atriole and capillary that can vasoconstrict and vasodilate
What is vasodilation
Vasodilation is a decrease in sympathetic stimulation causing a widening in the diameter of the arteriole and pre-capillary sphincter
What is vasoconstriction
Vasoconstriction is an increase in sympathetic stimulation causing a narrowing of the atriole and the pre-capillary sphincter
