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Dogiel Cells
Dogiel cells, also known as cells of Dogiel, are a type of multipolar neuronal cells within the prevertebral sympathetic ganglia. They are named after the Russian anatomist and physiologist Alexandre Dogiel (1852–1922). Dogiel cells play a role in the enteric nervous system The enteric nervous system (ENS) is one of the three divisions of the autonomic nervous system (ANS), the others being the sympathetic nervous system (SNS) and parasympathetic nervous system (PSNS). It consists of a mesh-like system of neurons th .... Types There are seven types of cells of Dogiel. References ;Further reading * * * * {{Nervous tissue Sympathetic nervous system Enteric nervous system ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multipolar Neuron
A multipolar neuron is a type of neuron that possesses a single axon and many dendrites (and dendritic branches), allowing for the integration of a great deal of information from other neurons. These processes are projections from the neuron cell body. Multipolar neurons constitute the majority of neurons in the central nervous system. They include motor neurons, and also interneurons (relay neurons), which are most commonly found in the cortex of the brain and the spinal cord The spinal cord is a long, thin, tubular structure made up of nervous tissue that extends from the medulla oblongata in the lower brainstem to the lumbar region of the vertebral column (backbone) of vertebrate animals. The center of the spinal c .... Peripherally, multipolar neurons are found in autonomic ganglia. See also * Dogiel cells * Ganglion cell * Purkinje cell * Pyramidal cell Additional images File:Blausen 0672 NeuralTissue.png, Neural tissue References External links DiagramDi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prevertebral Ganglia
Prevertebral ganglia (or collateral ganglia, or preaortic ganglia) are sympathetic ganglia situated along the midline, anterior to the aorta and the vertebral column. The prevertebral ganglia are the celiac ganglia (including the aorticorenal ganglia), the superior mesenteric ganglion, and the inferior mesenteric ganglion. The paravertebral ganglia, meanwhile, are the segmental ganglia of each the sympathetic trunk situated along either side of the midline. See also * Autonomic ganglion * Prevertebral plexus * Dogiel cells Dogiel cells, also known as cells of Dogiel, are a type of multipolar neuronal cells within the prevertebral sympathetic ganglia. They are named after the Russian anatomist and physiologist Alexandre Dogiel (1852–1922). Dogiel cells play a r ... Additional images File:Gray839.png, Sympathetic (red) and parasympathetic (blue) nervous system References External links * {{Autonomic Sympathetic nervous system ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sympathetic Ganglia
The sympathetic ganglia, or paravertebral ganglia, are autonomic ganglia of the sympathetic nervous system. Ganglia are 20,000 to 30,000 afferent and efferent nerve cell bodies that run along on either side of the spinal cord. Afferent nerve cell bodies bring information from the body to the brain and spinal cord, while efferent nerve cell bodies bring information from the brain and spinal cord to the rest of the body. The cell bodies create long sympathetic chains that are on either side of the spinal cord. They also form para- or pre-vertebral ganglia of gross anatomy. The efferent nerve cell bodies bring information from the body to the brain regarding perceptions of danger. This perception of danger can instigate the fight-or-flight response associated with the sympathetic nervous system. The fight-or-flight response is adaptive when there is a real and present danger which can be avoided or diminished through increased sympathetic activity. Sympathetic activity could be incr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexandre Dogiel
Alexander Stanislavovich Dogiel or Dogel (; 1852 in Panevėžys – 1922 in Saint Petersburg), was a Russian histologist and neuroscientist. He contributed to a morphological classification of nerve cells. The cells of Dogiel, bipolar neurons of the spinal ganglia, are named after him. Biography Dogel studied at Kazan University where he graduated in 1883. He inaugurated his career in 1885 as a monitor in embryology. Then he taught and practiced histology, first in Tomsk from 1888, then in 1892 at the Saint Petersburg Medical Institute where he was entrusted with the organization of the histology laboratory. He founded the ''Russian Archives of Anatomy, Histology and Embryology'' (). Dogel lived and worked in isolation, rarely but authoritatively publishing lengthy and richly illustrated articles. His work focused on degenerative and regenerative neuromuscular junction abnormalities, neuromuscular spindles, and various cellular categories within the central nervous system. H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enteric Nervous System
The enteric nervous system (ENS) is one of the three divisions of the autonomic nervous system (ANS), the others being the sympathetic nervous system (SNS) and parasympathetic nervous system (PSNS). It consists of a mesh-like system of neurons that governs the function of the gastrointestinal tract. The ENS is nicknamed the "second brain". It is derived from neural crest cells. The enteric nervous system is capable of operating independently of the brain and spinal cord, but is thought to rely on innervation from the vagus nerve and prevertebral ganglia in healthy subjects. However, studies have shown that the system is operable with a severed vagus nerve. The neurons of the enteric nervous system control the motor functions of the system, in addition to the secretion of gastrointestinal enzymes. These neurons communicate through many neurotransmitters similar to the CNS, including acetylcholine, dopamine, and serotonin. The large presence of serotonin and dopamine in the intest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sympathetic Nervous System
The sympathetic nervous system (SNS or SANS, sympathetic autonomic nervous system, to differentiate it from the somatic nervous system) is one of the three divisions of the autonomic nervous system, the others being the parasympathetic nervous system and the enteric nervous system. The enteric nervous system is sometimes considered part of the autonomic nervous system, and sometimes considered an independent system. The autonomic nervous system functions to regulate the body's unconscious actions. The sympathetic nervous system's primary process is to stimulate the body's fight or flight response. It is, however, constantly active at a basic level to maintain homeostasis. The sympathetic nervous system is described as being antagonistic to the parasympathetic nervous system. The latter stimulates the body to "feed and breed" and to (then) "rest-and-digest". The SNS has a major role in various physiological processes such as blood glucose levels, body temperature, cardiac output, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
