Final answer:
Chemoreceptors detect chemical concentrations in the blood and contribute to vascular homeostasis.
Step-by-step explanation:
Visceral afferent receptors known as chemoreceptors detect chemical concentrations in blood.
They monitor levels of oxygen, carbon dioxide, and hydrogen ions (pH) in the bloodstream, contributing to vascular homeostasis.
Chemoreceptors are located near the baroreceptors in the aortic and carotid sinuses, and they send signals to the cardiovascular and respiratory centers in the medulla oblongata.