Question

Choose the correct statement: If the vasopressin receptor of a man is defective. Then

• A. He suffer from low blood pressure and dehydration.
• B. Shows hyperglycemic condition. c)
• C. Excessive thirst does not occurs
• D. The urea level in the urine is higher than the normal.

Answer 1

The correct option is A He suffer from low blood pressure and dehydration.

• Vasopressin regulates the tonicity of body fluids. It is released from the posterior pituitary in response to hypertonicity and causes the kidneys to reabsorb solute-free water and return it to the circulation from the tubules of the nephron, thus returning the tonicity of the body fluids toward normal.
  
• If vasopressin receptors are absent, it would result in increased loss of water from the body, leading to dehydration, increased thirst and Increased blood pressure.

So, the correct option is 'He suffers from low blood pressure and dehydration'.