Sagittal cut of the head, here with pharyngitis or sore throat. Large parts of the brain are visible: The cerebrum, below it the corpus callosum, fornix, and septum pellucidum, which seperates the anterior horns of the lateral ventricles. The thalamus, a part of the interbrain (diencephalon), is visible. Directly in front of the pituitary gland (hypophysis): The crossing of the nasal optic nerve fibers - optic chiasm. Dorsal: the interbrain with the pineal gland. The midbrain (mesencephalon) is traversed by the cerebral aqueduct. The hindbrain (rhombencephalon) consists of the ventral pons and medulla oblongata, the 4th ventricle, as well as the dorsal cerebellum. In the craniofacial area, the topographic relations between nasal cavity, frontal sinus, sphenoid sinus and the cranial base or the surrounding brain areas are important. The lateral wall of the nasal cavity is shaped by three nasal conchae.
