Rat lab

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Author:
crimsonblaze
ID:
95239
Filename:
Rat lab
Updated:
2011-07-26 00:44:12
Tags:
dorsal ventral
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Description:
Morphological terms
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  1. Dorsal/Ventral
    • Dorsal = toward belly/undersurface
    • Lateral = towards back/uppersurface
  2. Medial/Lateral
    • Medial = towards mid region
    • Lateral = towards the sides (right/left)
  3. Anterior/Posterior
    • Anterior = head or part that moves forward
    • Posterior = opposite part or surface
  4. Distal/ Proximal
    • Distal = away from point of reference usually main mass
    • Proximal = near point of reference
  5. Superficial/ Deep
    • Superficial = on surface
    • Deep = away from surface
  6. Oral/ Aboral
    • Oral = surface where mouth is
    • Aboral = surface opposite from mouth
  7. Cephalic/ Caudal
    • Cephalic = towards head
    • Caudal = towards tail
  8. Superior/ Inferior
    • Superior = up
    • Inferior = down
  9. Radially Symmetry Organisms
    can be divided in half many times
  10. Bilaterally Symmetrical Organisms
    can be divided in half by only one plane
  11. Anteroposterior/ Longitudinal Axis
    • line from anterior to posterior direction
    • from mouth to butt
  12. Dorsiventral Axis
    lines from dorsal to ventral side
  13. Transverse Axis
    • LINE that cuts body in half from side to side
    • lines running laterally across body (side to side)
  14. Sagittal Plane (mid-sagittal, parasagittal)
    • cuts body in half between eyes
    • divides organism into left/right side
    • mid-sagittal = equal
    • parasagittal = unequal
  15. Transverse Plane
    • cuts body in half from side to side
    • cross that includes transver and dorsiventral axes
  16. Frontal Plane
    • cuts between mouth and eyes to both feet
    • includes transverse and anteroposterior axes
  17. Gastrointestinal (GI) Tract - aka alimentary canal
    inner tube of digestive tract
  18. Integumentary System
    outer tube/ skin of digestive tract
  19. Coelom
    • space/cavity between inner and outer tube
    • between the GI tract and Integumentary system
    • examples: thoracic or abdominal caivty
  20. Peritoneum
    • lines coelom
    • two layers enclose it => space inbetween = ceolom
    • divided into parietal and visceral peritoneum
    • pariental - lines cavity
    • visceral - covers most abdominal organs
    • ex: in GI tract
  21. Mesentery
    • suspends GI tract from dorsal/ventral aspects by layers of peritoneum
    • position organ
    • allow for presense of nerves, blood, lymph vessels
  22. Acoelomate
    • no coelom
    • lack fluid filled cavity
    • epidermis -> muscle layer -> mesodermal cells -> endodermal cells -> gut
    • ex: platyhelminthes (flatworms, tapeworms, etc)
  23. Coelomate
    • has coelom
    • fluid filled cavity surrounded by peritoneum held up by mensentery
    • epidermis-> muscle layer ->visceral organ ->peritoneum ->coelom ->peritoneum-> endodermal cells-> gut
  24. Heamolymph
    • fluid that leaks from a break in vessel
    • emtpies into interstitial space (empty space/gap)
    • intentional breaks in vessels of organisms with open circulatory system

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