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Pinealocytes are the main cells contained in the pineal gland, located behind the third ventricle and between the two hemispheres of the brain. The primary function of the pinealocytes is the secretion of the hormone melatonin , important in the regulation of circadian rhythms . [ 1 ]
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The pineal gland is a pine cone-shaped (hence the name), unpaired midline brain structure. [3] [10] It is reddish-gray in colour and about the size of a grain of rice (5–8 mm) in humans. It forms part of the epithalamus. [1] It is attached to the rest of the brain by a pineal stalk. [11]
How many of these brain busters can you solve? The post 25 Printable Brain Teasers You Can Print for Free appeared first on Reader's Digest.
Corpora arenacea (singular: corpus arenaceum, [1] also called brain sand or acervuli [2] [3] or psammoma bodies [4] or pineal concretions [4]) are calcified structures in the pineal gland and other areas of the brain such as the choroid plexus. Older organisms have numerous corpora arenacea, whose function, if any, is unknown.
Although the function is unknown, there are a multitude of these cells found in the ventral ganglia of the nerve cord. Neurosecretory cells, found in clusters in the medial and lateral parts of the brain, control corpora allata activity by producing juvenile hormone during the larval or nymphal instars, [ 6 ] the phase between periods of ...
This development section covers changes in brain structure over time. It includes both the normal development of the human brain from infant to adult and genetic and evolutionary changes over many generations. Neural development in humans; Neuroplasticity – changes in a brain due to behavior, environment, aging, injury etc.
Information about the structure and function of the human brain comes from a variety of experimental methods, including animals and humans. Information about brain trauma and stroke has provided information about the function of parts of the brain and the effects of brain damage. Neuroimaging is used to visualise the brain and record brain ...