What Type of Neuron Detects Changes in Plasma Osmolarity

Question

What type of neuron detects changes in plasma osmolarity?
A)baroreceptor
B)osmoreceptor
C)nociceptor
D)chemoreceptor

Accepted Answer

Osmoreceptors are specialized neurons that detect changes in plasma osmolarity, which reflects the concentration of solutes in the blood. When osmoreceptors detect high levels of solutes in the blood, they trigger the release of anti-diuretic hormone (ADH) from the posterior pituitary gland, which increases water reabsorption in the kidneys and helps to dilute the blood. This mechanism helps to maintain homeostasis of body fluid balance. Baroreceptors, nociceptors, and chemoreceptors detect changes in blood pressure, tissue damage, and chemical composition, respectively.