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ENT and Allergy Associates specializes in ear, nose, and throat services with our team of physicians, specialists, and experts. Book your appointment today. The pores accommodate tube feet, which are slender, extensible, and often sucker-tipped. From nodules on the test arise long, movable spines and pedicellariae (pincerlike organs); these structures may have poison glands. The mouth, on the underside of the body, has a complex dental apparatus called Aristotle’s lantern, which also may be venomous.