What does myoneural junction mean?
Definitions for myoneural junction
my·oneu·ral junc·tion
This dictionary definitions page includes all the possible meanings, example usage and translations of the word myoneural junction.
Princeton's WordNet
neuromuscular junction, myoneural junctionnoun
the junction between a nerve fiber and the muscle it supplies
Wikipedia
myoneural junction
A neuromuscular junction (or myoneural junction) is a chemical synapse between a motor neuron and a muscle fiber.It allows the motor neuron to transmit a signal to the muscle fiber, causing muscle contraction. Muscles require innervation to function—and even just to maintain muscle tone, avoiding atrophy. In the neuromuscular system nerves from the central nervous system and the peripheral nervous system are linked and work together with muscles. Synaptic transmission at the neuromuscular junction begins when an action potential reaches the presynaptic terminal of a motor neuron, which activates voltage-gated calcium channels to allow calcium ions to enter the neuron. Calcium ions bind to sensor proteins (synaptotagmins) on synaptic vesicles, triggering vesicle fusion with the cell membrane and subsequent neurotransmitter release from the motor neuron into the synaptic cleft. In vertebrates, motor neurons release acetylcholine (ACh), a small molecule neurotransmitter, which diffuses across the synaptic cleft and binds to nicotinic acetylcholine receptors (nAChRs) on the cell membrane of the muscle fiber, also known as the sarcolemma. nAChRs are ionotropic receptors, meaning they serve as ligand-gated ion channels. The binding of ACh to the receptor can depolarize the muscle fiber, causing a cascade that eventually results in muscle contraction. Neuromuscular junction diseases can be of genetic and autoimmune origin. Genetic disorders, such as Congenital myasthenic syndrome, can arise from mutated structural proteins that comprise the neuromuscular junction, whereas autoimmune diseases, such as myasthenia gravis, occur when antibodies are produced against nicotinic acetylcholine receptors on the sarcolemma.
ChatGPT
myoneural junction
A myoneural junction, also known as the neuromuscular junction, is the site where a motor neuron communicates with a muscle fiber to transmit signals from the nervous system, leading to contraction or relaxation of the muscle. This communication is facilitated through the release of neurotransmitters. It is critical to the functioning of the muscular system.
Matched Categories
Numerology
Chaldean Numerology
The numerical value of myoneural junction in Chaldean Numerology is: 3
Pythagorean Numerology
The numerical value of myoneural junction in Pythagorean Numerology is: 5
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"myoneural junction." Definitions.net. STANDS4 LLC, 2024. Web. 30 Apr. 2024. <https://www.definitions.net/definition/myoneural+junction>.
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