Horizontal cut of the human cranium
Horizontal cut through the frontal human cranium, showing the nasal cavity and the preserved eyeballs (ocular bulbs). It shows the inner nose with the nasal septum, the nasal conchae and the sphenoidal sinus as one of the four paranasal sinuses. Also visible: Macroscopic parts of the visual apparatus with the ocular bulbs, extraocular muscles and the crossing of the optic nerve (optic chiasm, yellow crossing). The internal carotid artery is visible under the chiasm. The bottom of the picture shows cerebral gyri.