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Anterior-Posterior Axis

The anterior-posterior axis runs from the front to the back of the crab. Anterior refers to the front (the side with the eyes and mouth). Posterior refers to the rear of the crab.

The anterior-posterior axis, when viewed from the ventral (top) side of the crab. Figure modified from Crane (1975). image
The anterior-posterior axis, when viewed from the ventral (top) side of the crab. Figure modified from Crane (1975).
View of the anterior side of the crab. Figure modified from Crane (1975). image
View of the anterior side of the crab. Figure modified from Crane (1975).