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单词 Stratum oriens
释义

Stratum oriens

英语百科

Hippocampus anatomy

(重定向自Stratum oriens)
Human hippocampus.
Nissl-stained coronal section of the brain of a macaque monkey, showing hippocampus (circled).  Source: brainmaps.org
Shape of human hippocampus and associated structures.
Schematic diagram showing location of the hippocampus.

Hippocampus anatomy describes the physical aspects and properties of the hippocampus, a neural structure in the medial temporal lobe of the brain that has a distinctive, curved shape that has been likened to the sea horse monster of Greek mythology and the ram's horns of Amun in Egyptian mythology. This general layout holds across the full range of mammalian species, from hedgehog to human, although the details vary. For example, in the rat, the two hippocampi look similar to a pair of bananas, joined at the stems. 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. Due to the three-dimensional curvature of this structure, two-dimensional sections such as shown are commonly seen. Neuroimaging pictures can show a number of different shapes, depending on the angle and location of the cut.

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更新时间:2025/6/21 9:24:30