Anatomy

Made up by the brain and spinal cord.

Neck region of the spine.

Tissues that make up bone, cartilage, fat, blood and lymph.

A regulatory substance produced in an organism and transported in tissue fluids such as blood or sap to stimulate specific cells or tissues into action.

Srtong fibrous collagen tissue that attaches bone to bone.

Region of the body associated with the lower back.

A network of tissues and organs that help rid the body of toxins, waste and other unwanted materials. The primary function of the lymphatic system is to transport lymph, a fluid containing infection-fighting white blood cells, throughout the body.

White blood cells.

Nerve cells that connect the central nervous system to the muscles (glands or other organs as well).

Posterior portion of the skull.