The receptors for thirst are located In a part of the brain

The receptors for thirst are located In a part of the brain called the hypothalamus. These receptors, called osmoreceptors, are stimulated by an increase in blood osmolality. Imagine a man who has just landed on a desert island. Trace the course of events leading to his sensation of thirst. Can he satisfy his thirst by drinking seawater? Explain. Before the invention of refrigerators, pioneers preserved meat by salting it Explain how meat can be preserved by this procedure.

Solution

Salting it by adding salt removes available water from the food and changes the osmotic pressure. This will stop the grow of bacteria which require water. Salt creates electrolyte imbalance within the cell preventing the growth of bacteria.