![]() Osmoreceptors stimulate groups of neurons within the hypothalamus to release ADH from the posterior pituitary gland.Ĥ. The increase in osmotic pressure is detected by osmoreceptors within the hypothalamus that constantly monitor the osmolarity ("saltiness") of the bloodģ. Sweating or dehydration increases the blood osmotic pressure.Ģ. These stimuli occur when a person sweats excessively or is dehydrated.ġ.
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