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A. Notochord- protects and support the dorsal nerve cord; serves as the major skeletal support throughout life
b. Wheel
organ- draws food through the use of its cilia for digestion
c. Oral hood-serves as entrance and storage of food
d. Vestibule- IDK
e. Atriopore- serves as exit passage of water
f. Ocelli- act as simple eyes to detect light
g. Velum- work as valve and filter; surrounds the mouth
h. Velar tentacles- prevent undesirable objects from entering the digestive cavity
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