Following ingestion of a large amount of salt,

Question

Quizplus · Accepted Answer

Ingestion of a large amount of salt would lead to an increase in urine osmolarity due to the increase in salt concentration in the body. This would cause the secretion of atrial natriuretic factor, which acts to promote salt and water excretion in the urine, helping to restore normal osmolarity. However, firing by hypothalamic osmoreceptors would not decrease as they are responsible for sensing changes in plasma osmolarity and regulating thirst, so they would continue to signal the body to drink more water. Therefore, choice D is the best answer as it correctly identifies the effects on urine osmolarity and secretion of atrial natriuretic factor, while not including the incorrect statement about firing by hypothalamic osmoreceptors.

Following Ingestion of a Large Amount of Salt