Earthworm Dissection
By Natalia Salgado
Objective
Background Information
Scientific name: Lumbricina
Habitat: Soil
Predators: Birds, Snakes, Rodents, and Bugs
Prey: Deceased plants and animal matter
Niche: Primary
Ecological Adaptations: Ridges on skin
Dissection Pictures
Internal view
Internal view drawing
Internal view (no specifics)
Digestive System
Digestive system parts
Pharynx- A muscle that "Vacuums" the food through the mouth
Oesophagus- The tube between the Pharynx and the Crop
Crop- A thin walled "storage" that holds the food for some time
Gizzard- A grinding organ that breaks down food by being squeezed and rolled around in the organ
Intestine/Gut- Thin walled structure in which most chemical digestion occurs
Intestine- A cylindrical tube in which most absorption of nutrients occurs in
Anus- A hole in where the Casts are disposed of
Extra Facts
The longest earthworm was known to be 6 ft long
The rings around the earthworms are called annuli
On the annuli are small hairs that help the earthworm move