Light micrograph showing a sagittal section of a human pineal gland. The pineal recess is on the left, opened to the third ventricle and situated between the two commissures. The habenular commissure shows a huge deposit of calcium concretions (corpora arenacea, brain sand). On the contrary, the posterior commissure is free of them. The pineal parenchyma shows a distinct lobulation and a large glial spot. Dispersed throughout the distal half of the pineal, there are numerous calcium concretions that tend to accumulate near the glial spot.

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Photo credit: © JOSE CALVO / SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: -, anatomy, background, body, cerebri, circadian, conarium, endocrine, epiphysis, epithalamus, gland, histological, histology, hormonal, hormone, human, light, lm, melatonin, micrograph, microscope, microscopy, pineal, rhythm, white