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the muscle doesn't move
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What happens to a muscle when an electrical impulse from a nerve stops?
yes
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.
When electrical signal reaches end of nerve fiber a chemical what is secreted?
When the action potential (electrochemical signal) reaches the end of the nerve, calcium channels open, causing synaptic vesicles containing neurotransmitters to bind with the neuronal membrane. When this happens, the neurotransmitters are released into the synaptic cleft (process is called exocytosis). Once in the synaptic cleft, they can bind with postsynaptic neuron or muscle cell receptors.
What muscle and nerve will you need to isolate to study the physiology of nerve fibers?
To study the physiology of nerve fibers, you would need to isolate a specific muscle and the nerve innervating that muscle. This allows for the investigation of the interaction between the nerve and muscle, observing the transmission of signals and studying the response of the muscle to nerve stimulation. Commonly studied muscles and nerves in this context include the gastrocnemius muscle and the sciatic nerve in animal models.
What nerves carry signals to and from the eyes and ears?
The oculomotor nerve or the third cranial nerve, trochlear or forth cranial nerve and abducent or the sixth cranial nerve carry signal to your eye. The optic nerve carry the signal from the eye to the brain. Vestibulocochlear or the eighth cranial nerve carry the signal from your ear to the brain.
When a muscle receives a nerve signal it and pulls on a tendon?
The muscle responds and pulls on a bone by way of a tendon. It can not react until the nerve tells it to.
When muscle receives a nerve signal it blank and pulls on a tendon?
The muscle responds and pulls on a bone by way of a tendon. It can not react until the nerve tells it to.
Which substance is stored in the muscle's endoplasmic reticulum and then released when a nerve signal stimulates a muscle fiber?
Calcium ions
What happens to muscles when they lose their nerve supply?
The muscle will atrophy.
What happens to a muscle when an electrical impulse from a nerve stops?
yes
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.
What causes muscle spasm?
The short answer is "concentrated lactic acid." Concentrated lactic acid can get trapped in the spindle in the muscle fiber and can not get out. When this lactic acid gets trapped in the muscle spindle the feedback nerves that are protected in the muscle spindle can only send a weak signal to the cerebellum. A weak signal from the feedback nerve to the cerebellum tells the cerebellum to contract a muscle. The feedback nerve is trying to send a strong signal which would tell the cerebellum to relax but because the concentrated lactic acid is trapped in the spindle and interfering with the feedback nerve the correct signal can not get to the brain. As a result the muscle keeps contracting and it never relaxes. The muscles gets stuck in this "bad signal loop" which causes many other problems in the body.
When electrical signal reaches end of nerve fiber a chemical what is secreted?
When the action potential (electrochemical signal) reaches the end of the nerve, calcium channels open, causing synaptic vesicles containing neurotransmitters to bind with the neuronal membrane. When this happens, the neurotransmitters are released into the synaptic cleft (process is called exocytosis). Once in the synaptic cleft, they can bind with postsynaptic neuron or muscle cell receptors.
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.
What does each part of the cell do?
The dendrites receive the stimulus, the soma, or cyton, which contains the nucleus interprets the signal, and the axon and its terminals send the signal to another nerve cell, a muscle, or a gland.
What muscle and nerve will you need to isolate to study the physiology of nerve fibers?
To study the physiology of nerve fibers, you would need to isolate a specific muscle and the nerve innervating that muscle. This allows for the investigation of the interaction between the nerve and muscle, observing the transmission of signals and studying the response of the muscle to nerve stimulation. Commonly studied muscles and nerves in this context include the gastrocnemius muscle and the sciatic nerve in animal models.
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. -
