What is an example of the excitation and inhibition that is rated by changes of contraction rate?
Increase of heart rate during exercise.
Define pressure reservoir.
When blood exists the heart, it enters the arterial system to be distributed to the rest of the body.
When the blood vessels constrict, causing a decrease in pulse amplitude, a decrease in peripheral blood flow, and an increase in centralized blood pressure.
This releases the neurotransmitter, acetylcholine (slows down heart rate)
When the blood vessels open, allowing oxygenated blood to replenish the body. Results in an increase in pulse amplitude, increase in peripheral blood flow, and a decrease in centralized blood pressure.
This releases the neurotransmitter, epinephrine (increases heart rate, fight or flight response)
What neurotransmitters release epinephrine, and acetylcholine?
Parasympathetic release acetylcholine.
Sympathetic release epinephrine.
It ensures the central arterial blood pressure is maintained at an appropriate level and is not too high that it ruptures vessels.