#HIPPOCAMPUS ANATOMY 22D FULL#

After this comes a pair of ill-defined areas called the presubiculum and parasubiculum, then a After CA1 comes an area called the subiculum. The CA areas are all filled with densely packed PyramidalвЂ…cells similar to those found in the neocortex. NextД¬ome a series of Cornu Ammonis areas: first CA4 (which underlies the dentate gyrus), then CA3, thenДЄ very small zone called CA2, then CA1. Structure, a tightly packed layer of small granuleвЂ…cells wrapped around the end of the hippocampusвЂ…proper, forming a pointed wedge in some cross-sections, a semicircle in others. The first of these, the dentateвЂ…gyrus (DG), is actually a separate Starting at the dentate gyrus and working inward along the S-curve of the hippocampus means traversing a Neuroimaging pictures can show a number of different shapes, depending on the angle and location of the cut.Д«asic circuit of the hippocampus, shown using a modified drawing by Ramon y Cajal. Due to the three-dimensional curvature of this structure, two-dimensional sections such as shown are commonly seen. In primate brains, including humans, the portion of the hippocampus near the base of the temporal lobe is much broader than the part at the top. For example, in the rat, the two hippocampi look similar to a pair of bananas, joined at the stems.

#HIPPOCAMPUS ANATOMY 22D FULL#

This general layout holds across the full range of mammalian species, from hedgehog to human, although the details vary. It has a distinctive, curved shape that has been likened to the sea-horse monster of GreekвЂ…mythology and the ram's horns of Amun in EgyptianвЂ…mythology. Hippocampus anatomy describes the physical aspects and properties of the hippocampus, a neural structure in the medial temporalвЂ…lobe of the brain. Nissl-stained coronal section of the brain of a macaque monkey, showing hippocampus (circled).

Hippocampus anatomy 22d