Question :Consider how different foods affect water and salt balance, and how the excretory system must respond to maintain homeostasis.

Question :Consider how different foods affect water and salt balance,

1.	Question :Consider how different foods affect water and salt balance, and how the excretory system must respond to maintain homeostasis.
Answer» SOLUTION :The excessive intake of sodium chloride, i.e. common salt increases osmolarity. This increases thirst and secretion of vasopressin. The vasopressin increases reabsorption of water in the RENAL tubule. KIDNEYS prevent the loss of water. Due to intake of water due to thirst, extracellular fluid volume increases. This stimulates kidneys to excrete salt and water to bring osmolarity tonormal. When there is an increase in the blood PRESSURE due to increase in the extracellular fluid volume, cardiovascular reflexes occur to reduce the blood pressure. This brings the volume and blood pressure to normal. Thus, the excessive intake of sodium affects the water and salt balance. The excretory SYSTEM responds to those changes and maintains homeostasis.