Controls the circulation of blood through the body.

Filter bacteria and viruses.

Coordinates and controls the operation of the human body.

The sticky, salty fluid that circulates through the body, bringing nourishment and oxygen to all body parts.

A colorless liquid, rich with white blood cells called lymphocytes, that attack bacteria in the blood.

Appears as a whitish fiber, or bundle of fibers, that transmits impulses and sensations to the brain or spinal cord and impulses from these to the muscles and organs.

The aorta.

Removes old red blood cells.

Composed of long nerve fibers, orginates in the base of the brain and extends to the base of the spine.

Returns all blood from the head, face and neck to the heart.

Nodes in the cheek area that drain the cheeks.

Extends to the side of the forehead, temple and upper part of the cheek.

Also referred to as the anterior facial vein, is the main vein of the face

A network of organs, lymph nodes and lymph vessels that make lymph fluid and move it from tissues into the bloodstream.

Also known as the gastrointestinal system.