Skeletal system

Skeletal System

Made up of all the bones and other connective tissues

Functions

supports the body

protects internal organs

provides for movement

stores mineral reserves

makes blood cells

bones

bones are made of bone cells and protein Fibers that are surrounded by deposits of calcium salts

Compact Bone

Dense and hard

Arranged in a circular pattern

Haversion Canals

A network of tubes running through the compact bone

contains blood vessels and nerves

Spongy Bone

Found beneath the compact bone, in the ends of long bones and in the middle of short flat bones

Hard and strong but has holes

Keeps bones light

Bone Marrow

Found in the middle of the bone

A soft tissue

Makes blood cells

2 types of bone marrow

Red and yellow

Red

Makes red cells

In spongy bone

yellow

Mostly fat storage

cartilage

A strong connective tissue that supports the body and is softer and more flexible than a bone

Ossification

When cartilage is replaced by a bone during the process of bone formation

joint

A place where one bone attatches to another bone

Permit bones to move without damage

Ligaments

Connect bones to other bones

Cartilage

Covers the ends of bones

Synovial fluid

Lubricates joints to decrease friction almost completely