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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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What neurotransmitter causes muscle movement?
Acetylcholine is the primary neurotransmitter responsible for muscle movement. It is released from motor neurons at the neuromuscular junction to stimulate muscle contraction.
Which neurotransmitter is responsible for the excitatory phase of muscle contraction a. dopamine b. serotonin c. GABA d. none of the above?
None of the above. The neurotransmitter responsible for the excitatory phase of muscle contraction is acetylcholine. It is released from motor neurons at the neuromuscular junction to stimulate muscle fibers.
What do neurons stimulate?
Neurons stimulate other neurons or target cells (such as muscle cells or gland cells) through the release of neurotransmitters at synapses. This stimulation can trigger a response in the target cell, leading to activities such as muscle contraction or hormone release.
Chemical released by blood platelets is?
The chemical released by blood platelets is called serotonin. This neurotransmitter helps regulate various physiological processes such as blood clotting, smooth muscle contraction, and mood.
What is the chemical used at the junction with a skeletal muscle?
The chemical used at the junction with a skeletal muscle is acetylcholine (ACh). It is released from the motor neuron at the neuromuscular junction and binds to receptors on the muscle fiber's membrane, triggering muscle contraction. This process is essential for voluntary movement and is part of the overall neuromuscular signaling mechanism.
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 neurotransmitter causes muscle movement?
Acetylcholine is the primary neurotransmitter responsible for muscle movement. It is released from motor neurons at the neuromuscular junction to stimulate muscle contraction.
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.
What is the neurotransmitter in a somatic motor pathway?
The neurotransmitter in a somatic motor pathway is acetylcholine. It is released by motor neurons at the neuromuscular junction to stimulate muscle contraction.
Which neurotransmitter is responsible for the excitatory phase of muscle contraction a. dopamine b. serotonin c. GABA d. none of the above?
None of the above. The neurotransmitter responsible for the excitatory phase of muscle contraction is acetylcholine. It is released from motor neurons at the neuromuscular junction to stimulate muscle fibers.
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)
When a muscle contracts?
shortens
What do neurons stimulate?
Neurons stimulate other neurons or target cells (such as muscle cells or gland cells) through the release of neurotransmitters at synapses. This stimulation can trigger a response in the target cell, leading to activities such as muscle contraction or hormone release.
Chemical released by blood platelets is?
The chemical released by blood platelets is called serotonin. This neurotransmitter helps regulate various physiological processes such as blood clotting, smooth muscle contraction, and mood.
What is the chemical used at the junction with a skeletal muscle?
The chemical used at the junction with a skeletal muscle is acetylcholine (ACh). It is released from the motor neuron at the neuromuscular junction and binds to receptors on the muscle fiber's membrane, triggering muscle contraction. This process is essential for voluntary movement and is part of the overall neuromuscular signaling mechanism.
