Question

Lack of antidiuretic hormone ADH causes water loss from the body by

• A. Increased water loss through expiration
• B. Excessive urination
• C. By combination of all the above factors
• D. Increased sweating

Answer 1

Answer: (B)

Excessive urination

Low levels of anti-diuretic hormone will cause the kidneys to excrete too much water. Urine volume will increase leading to dehydration and a fall in blood pressure. Low levels of the anti-diuretic hormone may indicate damage to the hypothalamus or pituitary gland, or primary polydipsia (compulsive or excessive water drinking). In primary polydipsia, the low level of anti-diuretic hormone represents an effort by the body to get rid of excess water

So, the correct answer is 'Excessive urination'