I know I should know this... I am drawing a blank...
Q - Osmometer cells in the brain sense and increase in the concentration of plasma. This information is sent to the hypothalamus, which notifies the pituitary gland to release the hormone ADH. ADH causes the kidney to save water, which lowers the concentration of the plasma. Identify the elements of a feedback loop in this scenario. Is this a positive or a negative feedback loop? Explain your answer.
A - This is a negative feedback loop
Stimulus - ADH hormone
Receptor - hypothalamus???
Control Center - osmomoter cells
Effector - Plasma
May 13, '09
Seems to me it should be as follows:
Negative feedback loop
Stimulus - Concentration of plasma
Receptor - Osmometer cells
Control Center - Hypothalamus
Effector - ADH