Marrow

tissue found inside bones

Red Marrow – produces white blood cells, red blood cells, and platelets

Yellow Marrow – made of fat that replaces red marrow as person ages

Extension

Movement of a joint that increases the angle of the joint

(RELAX)

Flexion

The bending movement that decreases the angle of a bone joint

(CONTRACT)

Bones

Organs that contain two types of tissue: Compact Bone – the hard outer layer of bone Spongy Bone – the interior region of the bone

that contains many holes

Periosteum

Outside covering of bone

Periosteum

Cartilage

Stiff, flexible tissue that is part of the skeletal system.

Ligaments

Connective tissue that holds bones together at many joints

Tendons

Connective tissue that attaches skeletal muscle to bone

MusclesThere are 3 types of muscles, that help your body with

movement in different ways.

Skeletal Muscle – works with the skeletal system

and helps your move

Cardiac Muscle – found only in the heart, continually contracts and relaxes to move blood throughout your body

Smooth Muscle – found in organs such as the stomach, bladder,

and blood vessels; moves materials through your body

Voluntary

Muscles that you can consciously control

Involuntary

Muscles you cannot consciously control.