Question

3. Increased osmolality would occur in which of the following: a. sodium excess b. water loss C. decrease Na+ with decreased H20 and increased plasma solutes d. normal serum Na+ with increased H20 and normal plasma solutes A man comes to his physician complaining of fatigue, sudden weight loss, and mild weakness. Hi skin appears darkened and hyperpigmented. What lab results would this individual exhibit? a. Low ACTH, low cortisol b. High ACTH, low cortisol C. High ACTH, high cortisol d. Low ACTH, high cortisol

Answer 1

Ans:- 1,

B,

Water loss,

Osmolality increases with loss of water or dehydration and in this condition increased plasma osmolality stimulates anti diuretic hormone that reabsorbes water from kidneys and excretes more concentrated urine.

2,

A,

Low ACTH and low cortisol lab results would this individual exhibit because fatigue, loss of sudden weight, mild weakness, skin darkening and hyperpigmentation are the signs and symptoms of the low ACTH and low cortisol levels.