CIRCULATORY SYSTEM.

THE ORGAN SYSTEM THAT MOVES BLOOD THROUGH THE BODY.

HEART

THE MUSCULAR ORGAN THAT PUMPS BLOOD THROUGHOUT THE BODY

ATRIUM

AN UPPER CHAMBER OF THE HUMAN HEART.

• There are two. One on the left side and one on the right side.

VENTRICLE

A LOWER CHAMBER OF THE HUMAN Body

VALVE

A STRUCTURE THAT ALLOWS FLUIDS TO FLOW IN ONLY ONE DIRECTION

ARTERY

A BLOOD VESSEL THAT CARRIES OXYGEN-RICH BLOOD AWAY FROM THE HEART.

AOTRTA

A LARGE ARTERY THAT CARRIES OXYGEN-RICH BLOOD AWAY FROM THE HEART TO THE REST OF THE BODY.

VEINS

A BLOOD VESSEL THAT TRANSPORTS BLOOD INTO THE HEART.

VENA CAVA

THE MAIN VEIN LEADING FROM THE BODY INTO THE HEART.

CAPILLARY

A TINY BLOOD VESSEL THAT CONNECT ARTERIES AND VEINS