Internal anatomy of a starfish: marine animal with radiating symmetry. They are equipped with numerous tube feet.
Sieve plate: entrance to the water-vascular system of a starfish.
Anus: end of the digestive tract of a starfish.
Rectal cecum: cul-de-sac related to the rectum.
Ray: limb of a starfish.
Ring canal: tube that forms a ring of a starfish.
Tube feet: organ of locomotion of a starfish.
Digestive gland: organ of a starfish that secrets digestive enzymes.
Cardiac portion of the stomach: part of the stomach of a starfish used for pumping blood.
Pyloric portion of the stomach: part of the stomach of a starfish connected to the duodenum.