Coral Anatomy Concept Check

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Draggable item		Corresponding Item
Septa		Allows coral to anchor to a substrate and secrete more calcium carbonate, allowing them to grow.
Ectodermis		The tissue that connects colonial coral polyps and allows corals to share nutrients.
Mesenteries		The structure that holds an individual coral polyp in place allowing for stability. It is sometimes referred to as the cuplike skeleton.
Tentacles		The outer cell layer that houses nematocysts and secretes mucous.
Mucus		The inner cell layer that houses zooxanthellae.
Mouth		Inner layer of cells that lines the gastrovascular cavity absorbing nutrients, excreting mucus and waste, and allowing for gas exchange and reproduction.
Gastrovascular Cavity		Located in the coenosarc, allowing polyps to share nutrients and zooxanthellae.
Gastrodermis		The area that supports the stomach, absorbs nutrients, excretes mucus and waste, and allows for gas exchange and reproduction.
Coenosarc		Allow the stomach to expand and house the reproductive cells.
Oral Disk		The jelly-like substance in between the ectodermis and gastrodermis that helps maintain the form of animals.
Corallite		Located at the center of the oral disk and expels waste and injects food.
Basal Disk or Plate		A gelatinous substance that is used to aid in food capture, protection, and remove sediment and waste.
Endoderm		Specialized stinging cells located in the ectodermis that aid in predation.
Mesoglea		Soft tissue that supports the mouth and tentacles
Gastrovascular Canals		Support the inner folds of the mesenteries.
Nematocysts		Feeding mechanism that surrounds the oral disk and aids in capturing prey.