Earthworm

• Setae help in locomotion by providing grip
• Setae


  Structures in earthworms that aid in locomotion
• Clitellum


  Structure that helps in copulation and forms a cocoon for the eggs
• Parts of the digestive system in an earthworm

  • Mouth
  • Pharynx
  • Esophagus
  • Crop
  • Gizzard
  • Intestine
  • Anus
• We immobilize the cockroach before dissection to ensure the specimen remains still
• Immobilizing the cockroach complicates the dissection
• Immobilizing the cockroach is humane
• Peristalsis


  A wave-like movement of muscles used in earthworms to help move the worm forward.
• Setae


  Structures in earthworms that aid in locomotion, found on the body underneath the skin, used for peristalsis to help the worm move.