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in anatomy what destroys acetylcholine
(I believe that Ans to the 1st Q: would be) calcium ionsremove the inhibition of the troponin molecules which then triggers muscles contraction.
(the 2nd Ans would be) acetylcholinesterase distroys Ach in the synaptic cleft after nervous stimulation stops.
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∙ 12y ago
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What serves as the actual go signal for muscle contraction?
potassium ions
What usually triggers muscle fibers to contract or relax?
The contraction is triggered by the release of calcium within the muscle which is triggered by an electrical signal from a nerve.
Are sodium and potassium the final go signal in muscle contraction?
an increase in intracellular calcium ion levels
What is the process of excitation contraction coupling?
cross bridge formation "Excitation-contraction coupling" connects muscle fiber excitation to the muscle fiber contraction (cross bridge formation). During contraction, myosin heads form cross bridges many times-with each cross bridge generating a small amount of tension in the muscle fiber.
What role do nerves play in skeletal contraction?
When you think about moving your arm, your brain sends a signal down a nerve cell telling that muscle to contract. -
What does calcium do for your body?
Calcium strengthens your bones by adding matter. It also helps in the muscle contraction and the transmission of the nerve signal in the form of action potential
Where does the signal for contraction in the heart come from?
S.A node
What part of nerve cell is adjacent to neuromuscular junction?
The axon terminal of a nerve cell is adjacent to the neuromuscular junction. The axon terminal releases neurotransmitters that transmit signals across the synapse to the muscle fiber. This signal triggers muscle contraction.
How does the skeletal system and the nervous system work with each other?
the connection between the two is like this. the nervous system sends the signal to the skeletal muscle to contract. This contraction causes the muscle to pull the bone, and the bone bends. This would mean that the movement of the skeleton is caused by nervous system which triggers the skeletal muscle to move the skeleton.
Chemical released to stimulate muscle contraction?
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.
What is a t2 signal in the left paraspinous muscle?
There are a multitude of electrical signal released by neurons to activate a response in a muscle. A t2 signal in the left paraspinous muscle refers to the impulse from the t2 vertebrae to the muscle on the left of the spine .
What happens when a nerve does not signal a muscle?
the muscle doesn't move
