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A signal is generated in the motor cortex of the brain, and travels down the spinal cord to the affected motor neurons. As the action potential travels down the axon of the final motor neuron, it causes calcium influx and exocytosis of acetylcholine-containing vesicles, releasing acetylcholine into the neuromuscular junction. From there, acetylcholine binds with receptors on the muscle fiber end plates, where it depolarizes the muscle fiber, causing contraction of the muscle.
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∙ 10y ago
Wiki User
∙ 10y agoacetylcholine
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What is faradic type current?
Faradic current is specifically designed to stimulate muscle contraction through the nerve pathways
What substances contains the chemical energy that drives immediate muscle contraction?
ATP
What is the role of the triad in muscle contraction?
Once a triad has been achieved, Calcium ions get released. Once they're released they bind to troponin, which helps begin muscle contraction.
What is the treatment for flaccid muscles?
Fast ice stroking where 5 stroke in one minute.. from insertion to origin. Muscle belly tapping - Tap at the muscle belly to stimulate the muscle NMS - Using electrical stimulation to stimulate the muscle. Approximation Quick stretch -produce a relatively short lived contraction of the agonist muscle and short lived inhibition of the antagonist muscle. Q
What is a concentric contraction?
concentric contraction is atype of muscle contraction which the muscle shortens while genrating aforce The muscle shortens to produce movement. A muscle contraction in which shortening occurs.
Which muscle contraction does acetylcholine and norepinephrine affect?
Acetylcholine and norepinephrine both affect smooth muscle contraction. They stimulate contraction in some muscles and inhibits contraction in others.
What chemical reactions occur in the muscle during latent period of muscle contraction?
During the latent period of muscle contraction Ca++ is being released from the sacroplasmic reticulum and filament movement is taking up slack. This takes approx. 2 milliseconds.
Whats the name of the chemical in the muscular system that causes contraction?
There's more than one chemical that causes contraction. The neurotransmitter (usually acetylcholine) is released from the nerve and excites the muscle. There is a change in calcium, sodium and potassium ion concentrations. ATP is used. All of these work together to produce a muscle contraction.
How do bones and muscles work to have movement?
The neuromuscular junction. A chemical called neurotransmitter is released from a neuron to stimulate the muscle fibers to contract.
What chemical stimulates muscle contraction?
acetylcholine (ACh)
What is faradic type current?
Faradic current is specifically designed to stimulate muscle contraction through the nerve pathways
What substances contains the chemical energy that drives immediate muscle contraction?
ATP
What is the role of the triad in muscle contraction?
Once a triad has been achieved, Calcium ions get released. Once they're released they bind to troponin, which helps begin muscle contraction.
Where does the acetylcholine released for muscle contraction bind?
Sarcolema receptors
What is the treatment for flaccid muscles?
Fast ice stroking where 5 stroke in one minute.. from insertion to origin. Muscle belly tapping - Tap at the muscle belly to stimulate the muscle NMS - Using electrical stimulation to stimulate the muscle. Approximation Quick stretch -produce a relatively short lived contraction of the agonist muscle and short lived inhibition of the antagonist muscle. Q
What is muscle contraction without muscle shortening is what kind of contraction?
Isometric contraction
Constant contraction of a muscle is?
constant contraction of a muscle is called the muscle tone
