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11 terms

Integument

Provides protection and sometimes support

invertebrates

single-layered epidermis, sometimes with cuticle

Cephalopods

cuticle, epidermis, connective tissue (dermis), layer of iridocytes, and more connective tissue

Arthropods

epidermis (hypodermis) that secretes a complex cuticle, inner procuticle (protein and chitin) and outer epicuticle (protein and lipid for waterproofing)

Cuticle

flexible or calcified or sclerotized: often serving as an exoskeleton

ecdysis

Must be shed to allow growth

Vertebrates

have epidermis (stratified epithelium of ectodermal origin) and dermis (connective tissue of mesodermal origin)

cornified

Epidermis keratinized in terrestrial forms (scales, feathers, hair)

Dermis bone

armor —> flexible scales) (antlers

Color

structural (physical structure affects light) or pigment based (chromatophores)

crystals of g or p

Melanins, carotenoids in xanthophores), iridophores

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