<prompt> When NaCl is injected in the internal carotid artery, it causes release of ADH by acting on?Paramedian nucleusAnterior pituitaryParaoptic nucleusSupraoptic nucleus  <response>: Osmoreceptors located in the anterior hypothalamus preoptic nucleus, which are stimulated by NaCl injection increase osmolality. Osmoreceptors have stimulatory action on thirst centre and ADH secreting supraoptic nucleus. 