Compared to water bears, we may not • have a dramatic way of maintaining water balance, but we do have an effective one: Our bodies produce a hormone called • antidiuretic hormone (ADH). ADH is produced in the brain and • released from the pituitary gland into the bloodstream. It enhances fluid retention by causing the kidneys to reabsorb more water. The pituitary is stimulated to release • ADH when receptors detect an increase in blood osmolarity (increase in solute concentration in the blood). This also stimulates increased thirst. 3. What is the effect of increased • thirst? 4. Is this an example of positive or • negative feedback? Explain.
• Compared to water bears, we may not have a dramatic way of maintaining water balance, but we do have an effective one: • Our bodies produce a hormone called antidiuretic hormone (ADH). • ADH is produced in the brain and released from the pituitary gland into the bloodstream. It enhances fluid retention by causing the kidneys to reabsorb more water. • The pituitary is stimulated to release ADH when receptors detect an increase in blood osmolarity (increase in solute concentration in the blood). This also stimulates increased thirst. • 3. What is the effect of increased thirst? • 4. Is this an example of positive or negative feedback? Explain.
AP%20Bio%202018%20Summer%20Assignment%20Part%201.docx