About Lesson
Explain how the osmotic pressure in the human blood is maintained at a normal level
- When the osmotic pressure of blood increases above the normal level ( osmoreceptors in the) hypothalamus is stimulated to send an impulse to the pituitary gland; The pituitary gland is stimulated to produce more antidiuretic hormone (ADH); Which make kidney tubules more permeable to water; and more water is reabsorbed into the blood lowering the osmotic pressure to normal;
- When osmotic pressure of blood decreases; (osmoreceptors in) hypothalamus and pituitary gland are less stimulated; less ADH is produced ;which make the kidney tubules less permeable to water ;less water is reabsorbed into the blood raising the osmotic pressure to normal;