Answer:
osmosis
Step-by-step explanation:
Osmosis is the net movement of water molecules through a semipermeable membrane. The water molecules are not reabsorbed in the intestines and at the kidney nephrons. Increased osmotic pressure can be caused by inadequate production of vasopressin which regulates the amount of water in the body and the one being lost through kidneys, Thiazide diuretics which increases sodium excretion and kidney disorders
Hyponatremia occurs when the body contains too little sodium amounts due to increased fluid intake making sodium to be is diluted. People suffering from severe vomiting or diarrhea lose sodium due increase fluid intake.