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Animal Kingdom - Download Now PowerPoint

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					Introduction to Kingdom Animalia

Characteristics of Animals
Heterotrophic

Multicellular
Movement Eukaryotic

Basic Embryology
Define: Zygote Embryo Blastula Gastrula

Embryonic Germ Layers
– outside layer Mesoderm – middle layer Endoderm – inside layer
Ectoderm

LAYER Ectoderm
Mesoderm

Endoderm

ORGAN & ORGAN SYSTEM Nervous system Skin Muscles Circulatory System Skeletal System Reproductive System Lining of gut and respiratory tracts Liver Pancreas

Animals With No Embryonic Stages
Sponges

Cnidarians
Ctenophorans

Protostomes – blastopore becomes mouth



Acoelomates – no body cavity
– Platyhelminthes

Draw the acoelomate body plan in your notes here.  Pseudocoelomates – fake body cavity
– Nematodes


Draw the pseudocoelomate body plan in your notes here.

Deuterostomes – blastopore becomes anus


All are Eucoelomates – true body cavity
– Mollusks – Annelids – Arthropods – Echinoderms – Chordates



Draw the eucoelomate body plan in your notes here.

Symmetry
Assymmetry

–Irregular shapes –Do not move –Sponges

Symmetry
Radial

Symmetry

–Can divide into equal halves using many planes –Cnidaria (stinging animals) –Echinoderms (sea stars)

Symmetry
 Can

only divide into left & right halves  Most efficient for movement
– Flatworms – Roundworms – Mollusks – Segmented Worms – Chordates

Anatomical Positions
DORSAL

POSTERIOR

ANTERIOR

VENTRAL


				
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