External Structures:
- Prostomium: sensory device (helps them feel their way through the soil)
- Clitellum: produces most of the material secreted from earthworm cocoons
- tubercula pubertatis: used to identify mature earthworms
- anterior: head end of the worm (usually more pointed)
- posterior: tail end of the worm
- Ventral: bottom side of worm
Internal Structures:
- Ventral nerve cord: nerves that are in the abdomen
- Seminal receptacle: pocket related to the semen of an earthworm
- Nephridium: organ that performs the functions of kidneys
- Gizzard: pocket used as a stomach
- Crop: buldge of the esophagus
- Seminal Vessicles: small hollow organs that carry semen
- Esophagus: part of digestive tract
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