H UMAN B ODY. S KELETAL AND M USCULAR S YSTEM Bones give us shape, support, and protection Born with 300 bones, but as you age, some bones fuse together,
T HE AVERAGE HUMAN BRAIN CONTAINS AS MANY AS 100 BILLION NERVE CELLS, OR N EURONS N EURONS VARY WIDELY IN SIZE IN SHAPE, BUT THEY ARE ALL SPECIALIZED.
Homeostasis. What is Homeostasis ? ●Homeostasis is the regulation and maintenance of the internal environment of the body. ●Conditions within the body.
