Which statement is correct?
A)During hypotonicity, water enters the cells by osmosis.
B)The only cause of hypotonicity is drinking excess fluid.
C)Hypotonicity is a major consequence of diabetes mellitus, which is a deficiency of vasopressin.
D)Hypotonicity is usually associated with a negative water balance.
E)Common symptoms of hypotonicity include dry skin and sunken eyeballs.

Question

Quizplus · Accepted Answer

Hypotonicity refers to a state in which the concentration of solutes outside the cells is lower than the concentration inside the cells, causing water to move into the cells by osmosis in an attempt to equalize the concentration gradient.

B is incorrect because excessive sweating, kidney disease, and certain medications can also cause hypotonicity.

C is incorrect because diabetes mellitus is actually characterized by excessive thirst and urination, and a deficiency of vasopressin (also known as antidiuretic hormone) can lead to a condition called diabetes insipidus, which causes excessive water loss, not hypotonicity.

D is also incorrect because hypotonicity is associated with a positive water balance, as there is a net gain of water into the cells.

E is incorrect because common symptoms of hypotonicity include nausea, vomiting, headache, confusion, seizures, and even coma, not dry skin and sunken eyeballs.

Which Statement Is Correct