Notes #1 and #2- Body Organization and Skeletal System Part ONE

Femur

Largest bone in the body

Inner Ear Bones

Smallest bones in the body

Elbow (humerus/ulna)

The ___ is a hinge joint.

Shoulder (scapula/humerus)

The ___ is a ball and socket joint.

Skull to the vertebrae

The ____ is a pivot joint.

Immovable

A joint that has fused together.

Hinge

Non-twisting, powerful joint that can move in one direction.

Ball and socket

Twisting joint that can move in many directions.

Gliding

Partially movable joint where bones slide over one another.

Pivot

Joint where one bone rotates on a ring of another bone.

Joint

Place where two or more bones meet.

206

There are ___ bones in an adult.

Periosteum

The ___ is a tough membrane involved in bone growth and repair.

Osteoblasts

____ help form new bone by depositing Ca and P.

Osteoclasts

___ break down bone tissue.

Elastic

Ligaments are tough strands of ____ tissue that connect bones at movable joint

Compact bone

____ contains the live bone cells, blood vessels, and deposits of Ca and P.

Marrow

____ is the soft, fatty material found at the center of many long bones

Cushion

Cartilage can act a ____ between two bones.

100

There are about ____ trillion cells in the average adult.

18

Bones make up about ___% of your body weight.

Second

Two to three million red blood cells are made in the marrow every ______!

Exoskeleton

An ____ is made of chitin and found on the outside of insects.

Endoskeleton

An ___ is made of bone and found inside many animals.

Bone

Cartilage

Ligament

Muscle

Tendon