The skeleton provides what functions?

produces blood cells, provides protection for organs, helps us breathe, acts a warehouse for mineral storage, and allows for movement

Bone Types

Long Bones

longer than they are wide and are found in your ARMS & LEGS

Bones Types

Short Bones

fairly equal in width and length, similar to a cube, mostly found in your WRISTS and ANKLES

Bone Types

Flat Bones

thinner bones that can be either flat or curved and are platelike in nature

in the skulls, ribs, and breastbone(sternum)

Bone Types

Irregular Bones

like the parts of a jigsaw puzzle, odd, shaped bones needed to CONNECT to other bones

Example: hip bones, and the vertebrae that make up your spine

Bone is covered with what? And what is its main function

periosteum and its a tough fibrous connective tissue containing blood vessels that transport blood and nutrients into the bone to nurture the bone cells...It also contains lymph vessels, nerves, and cells that tear down and rebuild bone

The periosteum acts as an

anchors point for ligaments and tendons

Each Bone end is called a ?

epiphysis

The region running between or running through the bone is called?

diaphysis, and it is hollow

The hollow region is the diaphysis is called?

the medullary cavity, and it acts as a storage area for bone marrow

There are two kinds of bone marrow, what are they

Yellow and red

What does red bone marrow do?

makes a variety of blood cell types that include erythrocytes, white blood cells, and platelets

What does yellow marrow do?

high fat content, when you need more red blood cells, some of this can revert to red bone marrow to help in red blood cell production

Bone Tissue

Compact

a dense, hard tissue normally found in the shafts of long bones and the outer layer of other bones, tightly packed which makes for dense and strong structure

osteons

also known as haversian systems, the primary structural and functional units of compact bone cylindrical structures

The area around the osteocytes is filled with

protein, fibers, calcium, and other minerals

To ensure there is sufficient oxygen and nutrients for the bone cells osteons are connected with

perforating cells

spongy bone

arranged in bars and plates called trabeculae

Spongy bone is lined with

endosteum

What are the purposes of spongy bone?

it helps makes the bones lighter in weight and it provides a space for red bone marrow

Osteoclasts job is to

tear down bone material and help move calcium and phosphate into the blood extremely important for bone growth and repair

Osteoblasts

builders, laying down brick to make new exterior walls