where are g cells located?
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G-cells are neuroendocrine cells responsible for the synthesis and secretion of gastrin. They are primarily found in the pyloric antrum but can also be found in the duodenum and the pancreas.
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These cells that form myelin, protect, support, and maintain equilibrium in your nervous system are called glial cells. ... In more detailed terms, neuroglia are cells in your nervous system that are not neurons. Their role is to be the support team and cheerleaders for the neurons.
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Germ cells are cells that create reproductive cells called gametes. Germ cells are located only in the gonads and are called oogonia in females and spermatogonia in males. ... In males, germ cells undergo spermatogenesis to produce spermatozoa, or sperm cells.
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Follicles consist of the oocyte (germ cell) surrounded by and forming intercellular connections with specialized somatic cells called granulosa cells, which are in turn surrounded by and make connections with specialized somatic cells called theca cells (Fig. 4.1).
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Neuroglia cells represent the most numerous cell family in the central nervous system with 5–10 glial cells per neuron or 350 billion cells per brain. Glial cells retain their ability to divide; provide metabolic and structural support for neurons, and maintain conditions that allow adequate functioning of neurons.
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GMS:Active/Inactive Cells. Each of the cells in a cell-centered grid can be active or inactive. An inactive cell is a cell that is not part of the computational domain. ... All cells within the coverage are made active and all cells outside the coverage are made inactive.
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Glial cell: A supportive cell in the central nervous system. Unlike neurons, glial cells do not conduct electrical impulses. The glial cells surround neurons and provide support for and insulation between them. Glial cells are the most abundant cell types in the central nervous system.
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Germ cells are cells that create reproductive cells called gametes. Germ cells are located only in the gonads and are called oogonia in females and spermatogonia in males. In females, they are found in the ovaries and in males, in the testes.
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Heterotrimeric G proteins located within the cell are activated by G protein-coupled receptors (GPCRs) that span the cell membrane. Signaling molecules bind to a domain of the GPCR located outside the cell, and an intracellular GPCR domain then in turn activates a particular G protein.
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The G-spot lies on the anterior wall of the vagina, about 5-8cm above the opening to the vagina. It is easiest to locate if a woman lies on her back and has someone else insert one or two fingers into the vagina with the palm up.
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Astrocytes are a sub-type of glial cells in the central nervous system. They are also known as astrocytic glial cells. Star-shaped, their many processes envelop synapses made by neurons. In humans, a single astrocyte cell can interact with up to 2 million synapses at a time.
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Beta cells (β cells) are a type of cell found in pancreatic islets that synthesize and secrete insulin and amylin. Beta cells make up 50–70% of the cells in human islets. In patients with type I or type II diabetes, beta-cell mass and function are diminished, leading to insufficient insulin secretion and hyperglycemia.
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GLYCOGEN AS A FUEL SOURCE In addition to human muscle and liver cells, glycogen is stored in small amounts in brain cells, heart cells, smooth muscle cells, kidney cells, red and white blood cells, and even adipose cells.
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Pancreatic islets house three major cell types, each of which produces a different endocrine product: Alpha cells (A cells) secrete the hormone glucagon. Beta cells (B cells) produce insulin and are the most abundant of the islet cells.
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glial cells: definition. non-neuronal support cells in the CNS, not found in the PNS, provide physical protection and contribute to maintenance of homeostasis. astrocytes: definition. supply nutrients and oxygen to neurons, modulate neurotransmission and inflammatory response, repair CNS after trauma.
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Cellular Composition of the Anterior Pituitary Approximately 50% of the cells of the anterior pituitary are somatotrophs that produce growth hormone (GH) (Figure 2.3). These cells are primarily located in the lateral wings of the anterior lobe, but can also be scattered in the median wedge [24].
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Neuroglial Cells. ... Glia are more numerous than nerve cells in the brain, outnumbering them by a ratio of perhaps 3 to 1. Although glial cells also have complex processes extending from their cell bodies, they are generally smaller than neurons, and they lack axons and dendrites (Figure 1.4).