Your SlideShare is downloading. ×
Earthworm dissection 001
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×

Saving this for later?

Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime - even offline.

Text the download link to your phone

Standard text messaging rates apply

Earthworm dissection 001

2,781
views

Published on

Published in: Health & Medicine, Technology

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
2,781
On Slideshare
0
From Embeds
0
Number of Embeds
3
Actions
Shares
0
Downloads
56
Comments
0
Likes
0
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide

Transcript

  • 1. Earthworm Dissection Lumbricus terrestris Kingdom: Animalia Phylum: Annelida
  • 2. Students should Identify the following
    • Segments
    • Septum
    • Setae
    • Pharynx
    • Esophagus
    • Crop
    • Gizzard
    • Intestine
    • Aortic Arches
    • Ventral Nerve Cord
    • Dorsal Blood Vessel
    • Clittelum
    • Seminal Vesicles
    • Seminal Receptacles
  • 3. Students should know the following terminology
    • Invertebrate
    • Castings
    • Hermaphroditic
    • Hydrostatic Skeleton
    • Closed Circulatory System
  • 4. Students will use the following tools for the earthworm dissection
    • Scalpel
    • Probes
    • Dissecting Pins
    • Rubber Padded Dissecting Tray
  • 5. Scalpel
  • 6. Probe
  • 7. Dissecting Pins
  • 8. Dissecting Pan
  • 9. Before you start dissecting, find the following:
    • Mouth
    • Setae – the bristles used for locomotion. They are located by rubbing your fingers along the earthworm’s body. They are often times easier to feel than to see.
    • Sperm Duct
    • Clittelum
  • 10. Mouth
  • 11. Sperm Duct
  • 12. Clittelum
  • 13. Mouth Pin your worm at the tip of the mouth and at its midpoint.
  • 14. Start your incision 2 cm behind the clittelum. Make sure not to cut too deeply. Continue your cut to the mouth
  • 15. Begin to separate the skin using pins
  • 16. Pin the skin back as you go along the cut. Angle your pins outward so that are out of the way.
  • 17. As you pin the skin back, take your probe and break the partitions between the segments. These are called Septum.
  • 18.  
  • 19. Pharynx
  • 20. Aortic Arches – Earthworms have 5 pair of these simple hearts.
  • 21. Aortic Arch
  • 22. Seminal Vesicles
  • 23. Seminal Receptacles
  • 24. Crop
  • 25. Gizzard
  • 26. Dorsal Blood Vessel Intestine
  • 27. Ventral Nerve Cord
  • 28. Ventral Nerve Cord
  • 29. Brain
  • 30. Nerve Cord and Brain
  • 31. Brain