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Close-up, oblique ventrolateral view of the skull
Figure 2. Close-up obliqued ventrolateral view of important deep structures surrounding the tympanic bulla of the skull. The retroarticular vein is located just rostral to the entrance into the osseous ear canal and tympanic bulla. A distinct boney rim separates the osseous EAM from the stylomastoid foramen (exit site for the facial n.) is shown highlighted.