20. 18. Homeostasis describes the stable environment that the human body maintains, enabling the body to
things back into balance. Which of the following correctly describes systems working together to watch
function properly. When an outside stimulus threatens to disrupt homeostasis, body systems work to
homeostasis
The circulatory system moves waste products from the stomach to the excretory system
The nervous system senses cold temperatures and causes muscles to contract and relax rapidly.
The respiratory system releases hormones to regulate the immune system and fight germs in the
body
D.
The digestive system releases heat as it digests food, which the circulatory system spreads
throughout the body