Earthworm dissection 001
Upcoming SlideShare
Loading in...5
×
 

Earthworm dissection 001

on

  • 2,986 views

 

Statistics

Views

Total Views
2,986
Views on SlideShare
2,626
Embed Views
360

Actions

Likes
0
Downloads
30
Comments
0

3 Embeds 360

http://coffeebio.blogspot.com 299
http://www.coffeebio.blogspot.com 52
http://c214science.pbworks.com 9

Accessibility

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

    Earthworm dissection 001 Earthworm dissection 001 Presentation Transcript

    • Earthworm Dissection Lumbricus terrestris Kingdom: Animalia Phylum: Annelida
    • 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
    • Students should know the following terminology
      • Invertebrate
      • Castings
      • Hermaphroditic
      • Hydrostatic Skeleton
      • Closed Circulatory System
    • Students will use the following tools for the earthworm dissection
      • Scalpel
      • Probes
      • Dissecting Pins
      • Rubber Padded Dissecting Tray
    • Scalpel
    • Probe
    • Dissecting Pins
    • Dissecting Pan
    • 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
    • Mouth
    • Sperm Duct
    • Clittelum
    • Mouth Pin your worm at the tip of the mouth and at its midpoint.
    • Start your incision 2 cm behind the clittelum. Make sure not to cut too deeply. Continue your cut to the mouth
    • Begin to separate the skin using pins
    • Pin the skin back as you go along the cut. Angle your pins outward so that are out of the way.
    • As you pin the skin back, take your probe and break the partitions between the segments. These are called Septum.
    •  
    • Pharynx
    • Aortic Arches – Earthworms have 5 pair of these simple hearts.
    • Aortic Arch
    • Seminal Vesicles
    • Seminal Receptacles
    • Crop
    • Gizzard
    • Dorsal Blood Vessel Intestine
    • Ventral Nerve Cord
    • Ventral Nerve Cord
    • Brain
    • Nerve Cord and Brain
    • Brain