System Glossary
 Glossary Search for exoskeleton (Search Options)

Definition of Term

(English) The external, or integumentary, skeleton, including scales and dermal scutes, fin rays and spines, and the connective tissue attaching the skin to underlying parts of the body, also: hard parts on the body surface developed in the dermis, called membrane or dermal bones (scales, scutes, spines, plates, elements of the head and pectoral girdle, etc.). In bony fishes, many of these bones migrated to deeper layers below the dermis, forming a secondary exoskeleton. (See also: skeleton, spine, fin rays)
(French) Squelette externe ou tégumentaire, y compris les écailles, les denticules dermiques, les rayons des nageoires et de la colonne vertébrale, et le tissu conjonctif qui relie la peau aux parties sous-jacent du corps. (See also: skeleton, spine, fin rays)

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