Category Archives: Brain

Purkinje Cells

Purkinje cells are some of the largest neurons in the human brain  with an intricately elaborate dendritic arbor, characterized by a large number of dendritic spines. Purkinje cells are found within the Purkinje layer in the cerebellum. Purkinje cells are aligned like dominos stacked one in front of the other.

Image source post-mitotic tumblr (link).  Photo credit Thomas Deerinck

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Anencephaly Illustration

Anencephaly is a cephalic disorder that results from a neural tube defect that occurs when the rostral (head) end of the neural tube fails to close, usually between the 23rd and 26th day of conception, resulting in the absence of a major portion of the brain, skull, and scalp. (from wikipedia)

Indebted to Scientificillustration tumblr for making me aware of this image (link).   Archiv fur Anatomie, Physiologie und Wissenschaftliche Medicin, 1839 (link)

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Hippocampus

The hippocampus is the part of the brain that is involved in memory forming, organizing, and storing. It is a limbic system structure that is particularly important in forming new memories and connecting emotions and senses, such as smell and sound, to memories. The hippocampus is a horseshoe shaped paired structure, with one hippocampus located in the left brain hemisphere and the other in the right hemisphere. The hippocampus acts as a memory indexer by sending memories out to the appropriate part of the cerebral hemisphere for long-term storage and retrieving them when necessary. (from  biology.about.com link)

Image Source: post-mitotic tumblr (link).   credit: Thomas Deerinck

fluorescently-labelled hippocampus

from Greek hippos, meaning “horse” and kampos, meaning “sea monster”, compliments of Venetian anatomist Julius Aranzi and his penchant for seeing the forms of sea creatures in brain ultrastructure. 

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Holoprosencephaly CT scan

Holoprosencephaly (HPE) is the failure of the prosencephalon, or forebrain, to develop normally. The forebrain is a region of the brain in the fetus that develops into parts of the adult brain, including the cerebral cortex. Instead of the normal complete separation of the left and right halves of the forebrain, there is an abnormal continuity between the two sides.
There are several different types of holoprosencephaly. In the alobar form, there is no separation between the right and left halves at all. In semilobar HPE, at least some of the brain has separated into different halves. In the lobar form, most of the brain has separated into right and left sides, though there is incomplete division into the two halves. (from rarediseases.org)

Image from Carter Centers (link)

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