skeletal system Flashcards
how many bones did you have when you were a baby?
270 bones
how many bones do you have when you are an adult?
206 bones.
what is the squishy thing inside a bone?
bone marrow
what are the two main things for your bones to prevent them from being squishy or weak?
calcium and collagen
what are the four main functions of the skeletal system?
support
protect
production of blood cells
movement
what do red blood cells do?
carries oxygen all around the body.
what do white blood cells do
protects the body from infections.
what is an exoskeleton?
Some creatures, like lobsters, have tough skeletons on the outside of their bodies. It acts
like tough armour.
what is an endoskeleton?
Some creatures, like lobsters, have tough skeletons on the outside of their bodies. It acts
like tough armour.
what is a cytoskeleton?
Some creatures, like lobsters, have tough skeletons on the outside of their bodies. It acts
like tough armour.
