Studied by 0 people
Looks like no one added any tags here yet for you.
Negative Feedback
Opposes or negates stimulus
Positive Feedback
Enhances or triggers stimilus
Negative Feedback
Negative or Positive Feedback?
Increased pressure in the aorta triggers mechanism to lower blood pressure
{Key word: lower}
Negative Feedback
Negative or Positive Feedback?
A rise in blood calcium levels triggers the release of a hormone that lowers blood calcium levels.
Positive Feedback
Negative or Positive Feedback?
A rise in estrogen during the menstrual cycle increase the number of progesterone receptors in the uterus.
{Key word: increase}
Positive Feedback
Uterine contractions during childbirth (contraction UNTIL babies out/no more stimulus)
Negative Feedback
Negative or Positive Feedback?
Increased blood sugar stimulates the release of a hormone from the pancreas that stimulates the liver to store blood sugar
Positive Feedback
Negative or Positive Feedback?
Blood clot formation (amplifies chemicals in the clot promote further clotting UNTIL it's sealed)
Positive Feedback
Negative or Positive Feedback?
Milk production (as long as baby is nursing. milk will be produced UNTIL babies done)
Positive Feedback
Negative or Positive Feedback?
Fever (virus/bacteria, body heats self to get rid of it UNTIL the enemy destroyed)
Negative Feedback
Negative or Positive Feedback?
The ballcock in a toilet rises as the water rises, and then it closes a valve that turns off the water.
Negative Feedback
Negative or Positive Feedback?
Production of human red blood cells (erythropoiesis) - A decrease in oxygen is detected by the kidneys and they secrete erythropoietin. This hormone stimulates the production of red blood cells
Negative or Positive Feedback?
Negative or Positive Feedback?
Negative or Positive Feedback?
Note 
Flashcard (33)