Zoology lab: Phylum Porifera

pinacocytes

flattned eptiheial cells

choanocytes

cells that create water currents in canals and chambers

mesohyl

gelatinous matrix with scattered cells

spicules

structral cells made of of eithercalcium carbonte, silica or fibers of spongins

gemmules

internal asexual buds in freshwater

Class Demospongia

siliceous spicules, but never 6 rayed and/or fibers of sponging

all leuconoid

Class Calcarea

spicles are calcerous

asconoid, syconoid, or leucnoid

Ascon

incurrent pores, spongocoel lined with choanocytes; osculum

usually Class Calcarea

Sycon

ostium, incurrent canals, radial CANALS lined with choanocytes, spongocoel; osclum

Leucon

body plan with pores; incurrent canals; radial canals; flagellated chambers with choancytes; osculum

Class Hexactinellida

Spiclues are siliecous, 6 rayed and fused

Euplectella

radial canal

what is number 1

apopyle

what is 2

incurrent canal

what is 3.

dermal ostimum

what is 4

Amphiblastula

what is 1. pointing to