skeletal system

Students will be able to describe the function and parts of the skeletal system.

Bones

• You were born with 300 bones

• Adults have 206

• Some bones fuse together as you grow

• Bones work with muscles for movement

• Bones help maintain homeostasis by storing minerals and making blood cells.

Bone Structure

• made of connective tissue and minerals

• compact bone - rigid and dense outside

• spongy bone - tiny canals inside that provide strength and support

• soft tissue called marrow fills in spaces of spongy bone

• Red marrow makes blood cells

• yellow marrow stores fats