A human who has no access to fresh water but is forced to drink seawater instead will ________.
A) produce excessive antidiuretic hormone to remove more water but hold back salts
B) passively excrete excess water in order to remove the high concentration of ingested salt
C) release atrial natriuretic peptide to decrease blood pressure
D) risk becoming overhydrated within twelve hours

Question

Quizplus · Accepted Answer

Drinking seawater, which is very high in salt concentration, will lead to dehydration rather than rehydration. In an attempt to remove the excess salt, the person will passively excrete excess water, leading to even more severe dehydration. This is due to the body requiring more water to flush out the excess salt, making the person urinate more frequently, thus losing even more water.

A Human Who Has No Access to Fresh Water but Is