organ system; organelles
organ; organelles
organ; molecules
organelle; molecules
During exercise, one generates excess heat and the body temperature rises. As a response,
blood vessels dilate in the skin, warm blood flows closer to the body surface, and heat is lost.
This is an example of __________.
negative feedback
positive feedback
dynamic equilibrium
integration control
set point adjustment
When a woman is giving birth, the head of the baby pushes against her cervix and stimulates the
release of the hormone oxytocin. Oxytocin travels in the blood and stimulates the uterus to
contract. Labor contractions become more and more intense until the baby is expelled. This is an
example of __________.
negative feedback
positive feedback
dynamic equilibrium
integration control