This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous system, Subject name: Physiology
Osmoreceptors are located in 
Select and explain. 
A. Supraoptic nuclei, B. Paraventricular nuclei, C. Anterior hypothalamus, D. Lateral hypothalamus
A: Supraoptic nuclei
Answer: A: Supraoptic nuclei 
Explanation: Osmoreceptors are sensory receptors present in supraoptic nucleus. Hypothalamus regulates the water balance of the body through osmoreceptors by controlling water loss. The increased plasma osmolality stimulates the osmoreceptors in supraoptic nucleus. The stimulated neurons of supraoptic nucleus send impulses to the posterior pituitary gland to secrete ADH. ADH reaches tge kidney tubules through blood and causes increased absorption of water from collecting ducts of the kidneys. Thus water loss is decreased. Ref: guyton and hall textbook of medical physiology 12 edition page number:559,560,561