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Acetylcholine and norepinephrine both affect smooth muscle contraction. They stimulate contraction in some muscles and inhibits contraction in others.

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14y ago

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The two neurotransmitters that affect smooth muscle cells are acetylcholine and?

norepinephrine. Acetylcholine mainly causes smooth muscle contraction, while norepinephrine can either cause contraction or relaxation depending on the type of receptor it binds to on the smooth muscle cell.


What can acetylcholine and norepinephrine affect?

Smooth Muscle Cells


What do you think the effect of breaking down acetylcholine is on muscle contraction?

Breaking down acetylcholine can lead to muscle relaxation because acetylcholine is a neurotransmitter that stimulates muscle contraction. When acetylcholine is broken down, the signal for muscle contraction is reduced, resulting in muscle relaxation.


What chemical stimulates muscle contraction?

acetylcholine (ACh)


Where does the acetylcholine released for muscle contraction bind?

Sarcolema receptors


What is a sustained muscle contraction?

Occurs when acetylcholine (ACh) accumulates in the neuromuscular junction. It is called a tetanic contraction.


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.


Chemical released to stimulate muscle contraction?

Acetylcholine is the primary neurotransmitter released by motor neurons at the neuromuscular junction to stimulate muscle contraction. It binds to receptors on the muscle cell membrane, initiating a series of events that ultimately lead to muscle contraction.


What does ach do at a neuromuscular junction?

ACh (acetylcholine) binds to receptors at the NMJ (neuromuscular junction) to induce contraction of muscle.


The chemical that transmits the signal across the neuromuscular junction is called?

Acetylcholine is the chemical that transmits signals across the neuromuscular junction. It binds to receptors on the muscle cell membrane, leading to muscle contraction.


All of these neurons release acetylcholine as a neurotransmitter except?

specific cardiac and smooth muscle fibers


What terminates a muscle contraction?

"A muscle cell remains contracted until the release of acetylcholine stops and an enzyme produced at the axon terminal destroys any remaining acetylcholine."