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Splanchnic Nerves
The splanchnic nerves are paired visceral nerves (nerves that contribute to the innervation of the internal organs), carrying fibers of the autonomic nervous system ( visceral efferent fibers) as well as sensory fibers from the organs ( visceral afferent fibers). All carry sympathetic fibers except for the pelvic splanchnic nerves, which carry parasympathetic fibers. Types The term ''splanchnic nerves'' can refer to: * Cardiopulmonary nervesEssential Clinical Anatomy. K.L. Moore & A.M. Agur. Lippincott, 3 ed. 2007. Page 181 * Thoracic splanchnic nerves (greater, lesser, and least) * Lumbar splanchnic nerves * Sacral splanchnic nerves * Pelvic splanchnic nerves See also * Terminal cisterna * Rexed lamina * Preganglionic nerve fiber * Postganglionic nerve fiber In the autonomic nervous system, nerve fibers from the ganglion to the effector organ are called postganglionic nerve fibers. Neurotransmitters The neurotransmitters of postganglionic fibers differ: * In t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autonomic Nervous System
The autonomic nervous system (ANS), sometimes called the visceral nervous system and formerly the vegetative nervous system, is a division of the nervous system that operates viscera, internal organs, smooth muscle and glands. The autonomic nervous system is a control system that acts largely unconsciously and regulates bodily functions, such as the heart rate, its Myocardial contractility, force of contraction, digestion, respiratory rate, pupillary dilation, pupillary response, Micturition, urination, and Animal sexual behaviour, sexual arousal. The fight-or-flight response, also known as the acute stress response, is set into action by the autonomic nervous system. The autonomic nervous system is regulated by integrated reflexes through the brainstem to the spinal cord and organ (anatomy), organs. Autonomic functions include control of respiration, heart rate, cardiac regulation (the cardiac control center), vasomotor activity (the vasomotor center), and certain reflex, reflex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cervical Ganglia
The cervical ganglia are paravertebral ganglia of the sympathetic nervous system. Preganglionic nerves from the thoracic spinal cord enter into the cervical ganglions and synapse with its postganglionic fibers or nerves. The cervical ganglion has three paravertebral ganglia: * superior cervical ganglion (largest) – adjacent to C2 & C3; postganglionic axon projects to target: (heart, head, neck) via "hitchhiking" on the carotid arteries * middle cervical ganglion (smallest) – adjacent to C6; target: heart, neck * inferior cervical ganglion The inferior cervical ganglion is one of the three cervical sympathetic ganglia (i.e. of the cervical portion of the sympathetic trunk). It is situated between the base of the transverse process of the last cervical vertebra and the neck of the .... The inferior ganglion may be fused with the first thoracic ganglion to form a single structure, the stellate ganglion. – adjacent to C7; target: heart, lower neck, arm, posterior crani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Least Splanchnic Nerve
Thoracic splanchnic nerves are splanchnic nerves that arise from the sympathetic trunk in the thorax and travel inferiorly to provide sympathetic supply to the abdomen. The nerves contain preganglionic sympathetic fibers and general visceral afferent fibers. Nerves There are three main thoracic splanchnic nerves. Additional images File:Greater splanchnic nerve.png, Greater splanchnic nerve, seen in thoracic cavity The thoracic cavity (or chest cavity) is the chamber of the body of vertebrates that is protected by the thoracic wall (rib cage and associated skin, muscle, and fascia). The central compartment of the thoracic cavity is the mediastinum. Ther ... seen from left side. File:Gray848.png, The celiac ganglia with the sympathetic plexuses of the abdominal viscera radiating from the ganglia. File:Gray1120.png, The relations of the viscera and large vessels of the abdomen. Seen from behind, the last thoracic vertebra being well raised. File:Slide2zzzz.JPG, Thoracic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Superior Mesenteric Ganglia
The superior mesenteric ganglion is a ganglion in the upper part of the superior mesenteric plexus. It lies close to the origin of the superior mesenteric artery. Structure The superior mesenteric ganglion is the synapsing point for one of the pre- and post-synaptic nerves of the sympathetic division of the autonomic nervous system. Specifically, contributions to the superior mesenteric ganglion arise from the lesser splanchnic nerve, which typically arises from the spinal nerve roots of T10 and T11. This nerve goes on to innervate the jejunum, the ileum, the ascending colon and the transverse colon. While the sympathetic input of the midgut is innervated by the sympathetic nerves of the thorax, parasympathetic innervation is done by the vagus nerve The vagus nerve, also known as the tenth cranial nerve (CN X), plays a crucial role in the autonomic nervous system, which is responsible for regulating involuntary functions within the human body. This nerve carries both sens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thoracic Spinal Nerve 11
The thoracic spinal nerve 11 (T11) is a spinal nerve of the thoracic segment. Nervous System -- Groups of Nerves It originates from the spinal column
The spinal column, also known as the vertebral column, spine or backbone, is the core part of the axial skeleton in vertebrates. The vertebral column is the defining and eponymous characteristic of the vertebrate. The spinal column is a segmen ... from below the thoracic vertebra 11 (T11).
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Lesser Splanchnic Nerve
Thoracic splanchnic nerves are splanchnic nerves that arise from the sympathetic trunk in the thorax and travel inferiorly to provide sympathetic supply to the abdomen. The nerves contain preganglionic sympathetic fibers and general visceral afferent fibers. Nerves There are three main thoracic splanchnic nerves. Additional images File:Greater splanchnic nerve.png, Greater splanchnic nerve, seen in thoracic cavity The thoracic cavity (or chest cavity) is the chamber of the body of vertebrates that is protected by the thoracic wall (rib cage and associated skin, muscle, and fascia). The central compartment of the thoracic cavity is the mediastinum. Ther ... seen from left side. File:Gray848.png, The celiac ganglia with the sympathetic plexuses of the abdominal viscera radiating from the ganglia. File:Gray1120.png, The relations of the viscera and large vessels of the abdomen. Seen from behind, the last thoracic vertebra being well raised. File:Slide2zzzz.JPG, Thoracic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Celiac Ganglia
The celiac ganglia or coeliac ganglia are two large irregularly shaped masses of nerve tissue in the upper abdomen. Part of the sympathetic subdivision of the autonomic nervous system (ANS), the two celiac ganglia are the largest ganglia in the ANS, and they innervate most of the digestive tract. They have the appearance of lymph glands and are placed on either side of the midline in front of the crura of the diaphragm, close to the suprarenal glands (also called adrenal glands). The ganglion on the right side is placed behind the inferior vena cava. They are sometimes referred to as the semilunar ganglia or the solar ganglia. Neurotransmission The celiac ganglion is part of the sympathetic prevertebral chain possessing a great variety of specific receptors and neurotransmitters such as catecholamines, neuropeptides, and nitric oxide and constitutes a modulation center in the pathway of the afferent and efferent fibers between the central nervous system and the ovary. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thoracic Spinal Nerve 10
The thoracic spinal nerve 10 (T10) is a spinal nerve of the thoracic segment. Nervous System -- Groups of Nerves It originates from the spinal column
The spinal column, also known as the vertebral column, spine or backbone, is the core part of the axial skeleton in vertebrates. The vertebral column is the defining and eponymous characteristic of the vertebrate. The spinal column is a segmen ... from below the thoracic vertebra 10 (T10).
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Thoracic Spinal Nerve 9
The thoracic spinal nerve 9 (T9) is a spinal nerve of the thoracic segment. Nervous System -- Groups of Nerves It originates from the spinal column
The spinal column, also known as the vertebral column, spine or backbone, is the core part of the axial skeleton in vertebrates. The vertebral column is the defining and eponymous characteristic of the vertebrate. The spinal column is a segmen ... from below the thoracic vertebra 9 (T9).
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Thoracic Spinal Nerve 5
The thoracic spinal nerve 5 (T5) is a spinal nerve of the thoracic segment. Nervous System -- Groups of Nerves It originates from the spinal column
The spinal column, also known as the vertebral column, spine or backbone, is the core part of the axial skeleton in vertebrates. The vertebral column is the defining and eponymous characteristic of the vertebrate. The spinal column is a segmen ... from below the thoracic vertebra 5 (T5).
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Greater Splanchnic Nerve
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Greater may refer to: *Greatness, the state of being great *Greater than, in inequality * ''Greater'' (film), a 2016 American film *Greater (flamingo), the oldest flamingo on record * "Greater" (song), by MercyMe, 2014 *Greater Bank, an Australian bank *Greater Media, an American media company See also *Irredentism usually named as Greater ''Nation''. Examples include Greater Hungary, Greater Romania Greater Romania () is the Kingdom of Romania in the interwar period, achieved after the Great Union or the related pan-nationalist ideal of a nation-state which would incorporate all Romanian speakers.Irina LivezeanuCultural Politics in Greate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
