5 Questions
Which hormone stimulates the kidneys to retain water and sodium, and excrete potassium?
Aldosterone
What is the function of ADH?
Promotes reabsorption of water in the collecting duct
What does osmolality measure?
The number of particles per kilogram of solvent
What is the definition of osmosis?
The diffusion of water across a selectively permeable membrane
What does colloid osmotic pressure prevent?
The movement of free solvent molecules across a semi-permeable membrane into a region of high solute concentration
Study Notes
Hormone Regulation
- Aldosterone stimulates the kidneys to retain water and sodium, and excrete potassium.
- ADH (Antidiuretic Hormone) regulates water reabsorption in the kidneys.
Osmolality and Osmosis
- Osmolality measures the concentration of solutes in a solution.
- Osmosis is the movement of water molecules from an area of high concentration to an area of low concentration through a semipermeable membrane.
Colloid Osmotic Pressure
- Colloid osmotic pressure prevents the loss of water from blood vessels into tissues.
Test your knowledge of the endocrine system and fluid balance with this quiz! Learn about the functions of aldosterone and ADH, as well as the definitions of osmolality, osmosis, and hydrostatic pressure. Challenge yourself and expand your understanding of these important concepts.
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