Final answer:
Baroreceptors are plasma receptors that measure blood pressure and volume in the vasculature system by sensing the stretching of blood vessel walls. They are an essential part of the body's regulatory system for maintaining blood plasma volume and solute concentration homeostasis.
Step-by-step explanation:
The type of plasma receptor that works by sensing pressure exerted by water in the vasculature system is known as a baroreceptor. Baroreceptors monitor changes in blood pressure and volume. They are located in the aortic arch and the carotid sinuses and respond to the stretching of blood vessel walls caused by changes in blood volume and pressure.
When blood pressure rises, baroreceptors increase the frequency of action potentials to the central nervous system, leading to vasodilation, increased glomerular filtration rate (GFR), and more water being lost in urine. Conversely, a decrease in blood pressure results in fewer action potentials and sympathetic nervous system stimulation, causing vasoconstriction, which conserves water by reducing filtration and GFR.
These mechanisms are crucial for maintaining homeostasis in the body, particularly in the regulation of blood plasma volume and concentration of solutes. They are a key part of how the body regulates water intake and conservation in response to various states, such as dehydration.