The human body works well when the cells of the body work well. The cells in the body work well when the
conditions are just right." These right" conditions are maintained by the body through
state of maintaining a stable intemal environment despite changing external conditions.
amount of sugar, and amount of water are some conditions that need to be right in the
body for cells to work properly. When all the conditions are just right, the cells function properly

a. suckling by young

b. hypothalamus

c. dopamine

d. trh

e. anterior pituitary

f. mammary glands

g. milk production

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

la transducción de señal ocurre cuando una molécula de señalización de fluido extracelular activa un receptor de superficie de la célula.