Earthworm Cross section through the intestinal region Index Courses Zoo Review Earthworm cross section Search

Image by: Bryan Yang; ~7x magnification

Stained cross section slide of an earthworm. Visible are the:

• epiderms (outer layer)
• circular and longitudinal muscles
• coelom (body cavity)
• intestine, with typhlosole protruding into it
• chlorogogen cells - brown cells on the outer half of the intestine and typhlosole
• mucosa - cells that line the inner region of the intestine
• dorsal and ventral blood vessels (above and below the intestine, respectively)
• ventral nerve cord - somewhat large oval structure ventral to (below) the intestine
• metanephridia - on either side of the intestine