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37 Cards in this Set
- Front
- Back
spicules
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one of the minute calcareous or siliceous skeletal bodies found in sponges
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spongin
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fibrous, collagenous material making up the network of horny sponges
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ostia
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opening for incoming water
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oscula
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large pores for incoming water
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choanoctytes
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flagellated collar cells
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dermal ostia
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tiny incurrent pores
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spongocoel
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large cavity where water enters through microscopic dermal pores
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radial canals
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canals along the ambulacra
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incurrent canals
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where water enters from the dremal ostia
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prosopyles
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tiny openings
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apo-pyles
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internal pores
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mesohyl
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lose gelatinous matrix sponges form
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pinacocyte
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a type of cells in a sponge
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pinacoderm
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arrangement of cells
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myocytes
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modified pina-cocytes
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sclerocytes
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specialized cells in a sponge
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spongocytes
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cells that secrete spongin fibers
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collencytes
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cells that secrete fibrillar collagen
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lopyocytes
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cells that secrete quantities of collagen
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intracellular
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occurring within cells
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asexual reproduction
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single organism reproduction by means of bud formation and regeneration following fragmentation
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external buds
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buds on the outside
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internal buds (gemmules)
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buds on the inside formed in freshwater sponges
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micropyle
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a special opening through which gemmules escape
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sexual reproduction
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production through male and female cells
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monoecious
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containing both male and female sex cells in an individual
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parenchymula
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a spongy mass of cells filling space
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amphiblastula
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a hollow blastula
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inversion
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inside out
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micromeres
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flagellated cells
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macromeres
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nonflagellated cells
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regeneration
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ability to repair injuries and restore lost parts
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somatic embryogenesis
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regeneration of a sponge after it's been cut off
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trabecular net
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network of living tissue
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class calcarea
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have spicules of calcium
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class hexactinellida
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have 6 rayed siliceous spicules
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class demospongiae
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have siliceous spicules that are not 6 rayed
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