Basic Defintions
What is the process by which organisms maintain water balance?
Osmoregulation
This hormone promotes water reabsorption in the kidneys and stimulates thirst.
Anti-Diuretic Hormone or ADH
What happens to a red blood cell in a hypotonic solution?
It swells and may burst
One of the initial symptoms of dehydration is often described as dark-colored urine. (think about how concentration of urine varies based on water intake)
Concentrated urine
This is the organ primarily responsible for filtering blood and regulating water balance in the body.
The Kidneys
This process allows water to move across cell membranes.
Osmosis
This term describes a solution with equal concentrations of water inside and outside the cell. (homeostasis)
Isotonic
This group is especially vulnerable to dehydration due to factors like declined kidney function and decreased thirst response.
Elderly individuals
This term describes when water concentration is too low outside of the cell compared to the inside of the cell.
Hypertonic
This solute gives urine its smell, and it is a waste product created by the liver.
Urea
Releases less ADH
Hyponatremia