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The mid-sagittal view serves two purposes: 1) correlation of the lateral, frontal, posterior and dorsal views with internal structure and 2) to mark location of internal structures that are expected in coronal slices of the brain. The corpus callosum shows rostral and caudal relationships by it’s changing shape from front to back: a large splenium caudally and the genu rostral. The genu continues ventral as the rostrum that meets the anterior commissure. Adding to this relationship is the fornix that archs ventral to the corpus callosum approaching it caudally at the splenium and separating from it, rostrally, to meet the anterior commissure as the rostrum. A septum pellucidum is a curtain closing the space between the corpus callosum and the fornix and separates the paired lateral ventricles. The rostral end of the neurotube, represented in the lamina terminalis as a thin membrane, extends between the anterior commissure and the optic chiasm. The posterior commissure is located at the junction of the diencephalon and the mesencephalon brainstem. A groove between the two commissures separates the thalamus dorsally from the hypothalamus, below. A flexure of the neurotube at the mid-brain changes the angle of sectioning required to form coronal slices.
The mid-sagittal view serves two purposes: 1) correlation of the lateral, frontal, posterior and dorsal views with internal structure and 2) to mark location of internal structures that are expected in coronal slices of the brain. The corpus callosum shows rostral and caudal relationships by it’s changing shape from front to back: a large splenium caudally and the genu rostral. The genu continues ventral as the rostrum that meets the anterior commissure. Adding to this relationship is the fornix that archs ventral to the corpus callosum approaching it caudally at the splenium and separating from it, rostrally, to meet the anterior commissure as the rostrum. A septum pellucidum is a curtain closing the space between the corpus callosum and the fornix and separates the paired lateral ventricles. The rostral end of the neurotube, represented in the lamina terminalis as a thin membrane, extends between the anterior commissure and the optic chiasm. The posterior commissure is located at the junction of the diencephalon and the mesencephalon brainstem. A groove between the two commissures separates the thalamus dorsally from the hypothalamus, below. A flexure of the neurotube at the mid-brain changes the angle of sectioning required to form coronal slices.