Produces the cells that are in your blood
Voluntary muscles that work with bones to help you move
Control the movements necessary for your body's internal organs and blood vessels to function. Controlled by the brain, so movements they cause are involuntary.
A muscle found only in the heart. It controls how the blood is pumped throughout your body.
The process of skin cells hardening so that they form your hair, nails, and the outer layer of your skin.
the sum total of all bones in the body
All creatures with a vertebral column backbones.
The portion of the skeleton that supports and protects the head, neck, and trunk.
The portion of the skeleton that attaches to the axial skeleton and has the limbs attached to it.
Organisms from kingdom Animalia with no backbone.
A body covering, typically made of chitin, that provides support and protection.
Animals with exoskeletons, such as grasshoppers.
connective tissue that attaches the skeletal muscles to the skeleton.
A tough, flexible substance that allows joints to rub up against each other without damage.
Lubricates the joints so that their motion is smooth and easy.
Muscles that cause involuntary movement, which is movement made without conscious thought.
The tendency of plants to grow so that they face the light.
The tendency for a plant to sense which way is "up" and to grow that way.
Outer layer of skin
The inner layer below the epidermis
Below the dermis and composed mostly of fat. It is not technically considered part of the skin
A close relationship between two or more species where at least one benefits.
Skin in other organisms
* Mammals - produce hair
* Birds - produce feathers
* Fish - produce scales
* Reptile - produce scales
* Amphibians - also breathe with their skin
cavity within the shaft of the long bones filled with bone marrow
tissue that connects bone to bone
Two main types of bone tissue
Spongy and Compact bone
Outer most fibrous layer that supplies blood and nerves to the bone
Makes bones flexible; thread-like protein found in the bones, skin and connective tissue
Surrounds bone cells and is composed of principally two things: collagen and minerals
is found at the elbow, knee, ankle, and fingers, allows a joint to bend and straighten either up/down OR left/right only
rounded end of one bone fits into a cup like end of another bone; found at the hips and shoulders
type of joint found at the ankles and the base of each thumb; allows grasping and rotation
Small range of motion, but very stable. Found in the spine only.
Joints with greater range of motion have ________ stability.
Rigid, hard chemicals that contain calcium to make bones strong