Humans are an example of a

A group of similar cells that perform a common function is a

The heart is an example of a(n)

All of the bones, cartilage, and other connective tissues holding them together make up the

The part of your bones that is made of dense, solid material. It's the outside part.

The part of the bone on the inside that has open air-pockets which lighten your bones and provides most of their strength.

The special soft tissue found inside of a bone that makes red and white blood cells

A type of connective tissue that is softer than bone and is a cushion between the bones

The Strong elastic bands of connective tissue that hold joints todether

The organ system whose primary function is movement and flexibility of the body

The muscle type that is attached to the bones and allows you to move around

A tough elastic connective tissue that connects your skeletal muscles to your bones

The type of muscle that makes flat sheets in the walls of certain organs, like the digestive system

The special type of muscle found only in the heart

When a muscle cell activates and gets shorter it is called a

A muscle movement that is under your control, like picking up a glass of water, is an example of a(n)

The control and communication center of your body that monitors your external and internal conditions

The part of the nervous system that is made up of the brain and spinal cord

A nerve cell that is specialized to receive and conduct electrical impulses

The type of neuron that is designed to gather information from your body and send the information to your brain, like information from the things you feel with your hands and fingers

The mass of nerve tissue that is the main control center of the nervous system