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The mammillary bodies also mamillary bodies, are a pair of small round brainstem nuclei. [2] They are located on the undersurface of the brain that, as part of the diencephalon , form part of the limbic system .
The bundles of fibers come together in the midline of the brain, forming the body of the fornix. The lower edge of the septum pellucidum (the membrane that separates the lateral ventricles) is attached to the upper face of the fornix body. The body of the fornix travels anteriorly and divides again near the anterior commissure. The left and ...
The mammillary bodies directly or indirectly connect to the amygdala, hippocampus, and thalami as major structures in the limbic system. [6] The mammillothalamic tract carries signals from the mammillary bodies via the anterior thalamus to support spatial memory .
In neuroanatomy, the lateral geniculate nucleus (LGN; also called the lateral geniculate body or lateral geniculate complex) is a structure in the thalamus and a key component of the mammalian visual pathway. It is a small, ovoid, ventral projection of the thalamus where the thalamus connects with the optic nerve. There are two LGNs, one on the ...
The hypothalamus is divided into four regions (preoptic, supraoptic, tuberal, mammillary) in a parasagittal plane, indicating location anterior-posterior; and three zones (periventricular, intermediate, lateral) in the coronal plane, indicating location medial-lateral. [7] Hypothalamic nuclei are located within these specific regions and zones. [8]
Subfornical organ of a mouse. In this photomicrograph, the subfornical organ (arrow) is located on the undersurface of the fornix in the upper part of the third ventricle. The cells in this coronal section of the brain were colored with a bluish dye ("Nissl stain"). The thalamus is at the bottom of the photo. The bar at the lower right ...
The trunk of the body contains, from superior to inferior, the thoracic region encompassing the chest [1] the mammary region encompassing each breast; the sternal region encompassing the sternum; the abdominal region encompassing the stomach area; the umbilical region is located around the navel; the coxal region encompassing the lateral (side ...
The tuber cinereum is a convex mass of grey matter, [3]: 495 a ventral/inferior distention of the hypothalamus forming the floor of the third ventricle. [citation needed] The portion of the tuber cinerum at the base of the infundibulum (pituitary stalk) is the median eminence; [2] the infundibulum extends ventrally/inferiorly from the median eminence to become continuous with the infundibulum.