integumentary system
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Integumentary System
Janice V. Ng, MSc
2nd SEM 2012-2013
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Protection
Regulatory function
Sensation
Excretion
Respiration
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Invertebrates
Unicellular
Protozoans
Multicellular - epidermis
Phylum Porifera
Phylum Cnidaria
Phylum Platyhelminthes
Phylum Nematoda
Phylum Annelida
Phylum Arthropoda
Phylum Echinodermata
Vertebrates
Multicellular
Phylum Chordata
Class Amphibia
Class Mammalia
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Protozoan
Amoeba
Cell membrane
Paramecium
Cell membrane
Pellicle
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Phylum Porifera
Epidermis = Pinacoderm
pinacocytes
Choanocytes
Mesoglea (mesohyl)
Grantia
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Phylum Cnidaria
Epidermis
Cnidocytes
Cnidocysts/nematocysts
Mesoglea
Gastrodermis
Hydra
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Phylum Platyhelminthes (flatworm)
Class Turbellaria
Class Monogenea
Class Trematoda (flukes)
Class Cestoda (tapeworms)
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Class Turbellaria
Ventrally ciliated epidermis
Rhabdites
Gland cells
Dugesia/ Planaria
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Class Trematoda
Epidermis syncytial tegument
Fasciola
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Phylum Nematoda (roundworm)
Cuticle
Epidermis/Hypodermis
syncytial
Muscle layer
Longitudinal muscles
Ascaris
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Phylum Annelida (segmented worm)
Cuticle
Epidermis
Muscle layers
Circular
Longitudinal
Lumbricus
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Phylum Arthropoda
Cuticle (chitinized)
Epidermis
Molting/Ecdysis
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Phylum Echinodermata
Epidermis
Spines
Dermis with ossicles
Starfish (arm)
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Class Amphibia
Stratified epidermis
Stratum corneum - contains keratin
Stratum germinativum/mucosum/profundum/malphigii
Glands: (extending into dermis) Mucous and Poison
glands
Chromatophore
Dermis - fibrous CT
Stratum spongiosum
Stratum compactum
Subcutaneous layer
Frog
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Class Mammalia
Stratified Epidermis
Glands: (extending into
dermis) Sweat and
Sebaceous glands
Dermis
Hypodermis (superficial
fascia)
L.S of human skin/scalp
C.S of human scalp
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