Human body from organs to the cells of which they are composed. The human body consists of many interacting systems of organs. These interact to maintain homeostasis, keeping the body in a stable state with safe levels of substances such as sugar and oxygen in the blood. Each system contributes to homeostasis, of itself, other systems, and the entire body. Some combined systems are referred to by joint names. For example, the nervous system and the endocrine system operate together as the neuroendocrine system. The nervous system receives information from the body, and transmits this to the brain via nerve impulses and
Radial glial cell astrocytes, they have also been called "specialized astrocytes." Bergmann glia have multiple radial processes that extend across the molecular layer of the cerebral cortex and terminate at the pial surface as a bulbous endfoot. Bergmann glial cells assist with the migration of granule cells, guiding the small neurons from the external granular layer to the internal granular layer of the cerebral cortex along their extensive radial processes. Besides their role in early development of the cerebellum, Bergmann glia are also required for synaptic pruning. Following Purkinje cell death induced by CNS injury, Bergmann glia undergo extensive proliferative changes so as