Zoology-Chapter 9

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ZOOLOGY

branch of biology focusing on the structure, function, behavior and evolution of animals
PROTOPLASMIC

unicellular organism
CELL

loosely organized cells (sponges)
TISSUE

functional coordination between cells of similar type
ORGAN

specialized organs consisting of multiple tissue types
ORGAN SYSTEM

multiple organs at work together for specific function
ASYMMETRY

no symmetry; irregular in shape
SPHERICAL SYMMETRY

mirror images produced from any plane passing through center
RADIAL SYMMETRY

mirror images produced from any plane passing through the longitudinal axis
BILATERAL SYMMETRY

only one plane produces mirror images
SAGITTAL PLANE

imaginary plane dividing the left and right sides
TRANSVERSE PLANE

imaginary plane dividing the head side from the back/anus side
FRONTAL PLANE

imaginary plane dividing the tummy side from the back side
DORSAL

backside
VENTRAL

front/tummy side
ANTERIOR

head end
POSTERIOR

back/anus end
PROXIMAL

close
DISTAL

distant
TISSUE

cellular level of organization
DIPLOBLASTIC
- 2 embryonic tissue layers:
- => endoderm
- => ectoderm
connected by mesoglea
ENDODERM

inner layer--gastrodermis
ECTODERM

outer layer--epidermis
TRIPLOBLASTIC
- 3 embryonic tissue layers
- =>endoderm
- =>mesoderm
- =>ectoderm
ACOELOMATE

no body cavity
PSUEDOCOELOMATE

body cavity not surrounded by mesoderm
EUCOELOMATE

body cavity surrounded by mesoderm

--known as peritoneum
PROTOSTOMES
- 1st opening (mouth)
- spirical determinate cleavage
- mouth forms from blastropore
- schizocoelous--body cavity from split mesoderm cell
DUETERSTOMES
- radial indeterminate cleavage
- mouth not from blastropore
- enterocoelous--body cavity from gut

Author

taylynee

52919

Card Set

Zoology-Chapter 9

Description

Architectural Patterns of Animals

Updated

2010-12-02T21:54:13Z

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