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20 Cards in this Set

  • Front
  • Back
What is an animal?

4 characteristics
multicellular
heterotrophic, inest
eukaryotes
nerve and muscle structure
3 types of junctions
tight
desmosome
gap
true tissue
tissues are specialized for different purposes
radial symmetrey
jellyfish, can cut symmetry in any direction
bilateral symmetrey
cut down middle
cephalization
all senses are moved towards the front
anterior
head
posterior
rear, tail
dorsal
top, back
ventral
belly, stomach
lateral
sides
coelomate and purposes
body cavity, fluid filled seperate digestive tract from outer body wall

control environment
better protect from impact and pressure
aceolomate
triploblastic animal, solid bodies,
ectoderm
outer body covering
endoderm
lines diestive tube or archenteron
diploblastic
cnidarians and comb jellies form only two germ layers
triploblastic
bilateral animal, form middle layer, mesoderm
protosome development
spiral cleavage, planes of division or diagonal.

determinate cleavage, fate alread determined

first opening at mouth, coelom at base of blastopore opening during gastrulation
deuterostome development
radial cleavage

indeterminate cleavage, twins.

first opening anus, coelom at top of blastopore.
reproduction and deveopment of animal 3 stages
cleavage, blastula, gastrulation (produces layers of embryonic tissues) stages