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A 36 year old woman has a disease that affects the levels of acetylcholine in her synapses and neuromuscular junctions What is a potential consequence of this disease?
Wiki User
∙ 14y ago
abnormal conduction of signals from neurons to muscles
Wiki User
∙ 14y ago
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What neurotransmitter coordinates muscle actions a. acetylcholine b. epinepherine c. endorphin d. serotonin e. GABA?
A, acetylcholine. Acetylcholine is commonly secreted at neuromuscular junctions, the gaps between motor neurons and muscle cells, where it stimulates muscules to contract. At other kinds of junctions, it typically produces and inhibitory post-synaptic potential.
When an action potential arrives at the neuromuscular junction the most immediate response?
acetylcholine is released
What is the neurotransmitter of alpha-motor neuron?
Alpha-Motor neurons release the neurotransmitter acetylcholine at a synapse called the neuromuscular junction. When the acetylcholine binds to acetylcholine receptors on the muscle fiber, an action potential is propagated along the muscle fiber in both directions.
What is the neurotransmitter of the motor neuron?
Alpha-Motor neurons release the neurotransmitter acetylcholine at a synapse called the neuromuscular junction. When the acetylcholine binds to acetylcholine receptors on the muscle fiber, an action potential is propagated along the muscle fiber in both directions.
How does botulism toxin affect the neuromuscular junction?
It affects the axon terminal, by blocking the release of acetylcholine , thus preventing an action potential from occurring.
What potential motor end plate to synapse to acetylcholine synaptic cleft to special receptors on the skeletal muscle to action potential across the muscle travels down t-tubule to the what?
This is the neuromuscular junction. The action potential travels down the presynaptic motor neuron, releasing acetylcholine (ACh), which cross the synapse (neuromuscular junction), to bind to receptors on the end plate of muscle fibers, which induces depolarization, causing the muscle to contract.
The action potential is conducted into a skeletal muscle fiber by?
neuromuscular junctions Action potentials conduct down T tubules into skeletal muscles
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 the chemical portion of the nerve impulse called?
the most common neurotransmitters include acetylcholine, epinephrine, and serotonin. Different neurotransmitters may have different effects depending on which part of the nervous system it is in. Acetylcholine, for example, is used in neuromuscular junctions in order for muscle contraction to occur.
How does botulisma serious form of food poisoningcause muscle paralysis?
Botulinum toxin (aka. Botox, produced by the bacteria Clostridium Botulinum) causes paralysis by disrupting exocytosis of acetylcholine into the neuromuscular junction. When a nerve impulse reaches the neuromuscular junction, it normally triggers vesicles storing acetylcholine to fuse with the axonal membrane, releasing its contents into the junction where acetylcholine can trigger an action potential in the muscle fibre. Failure of the vesicle to fuse and release its contents into the junction deprives the muscle of any kind of signal that would cause contraction, thereby paralyzing it.
What is the difference between depolarizing and non-depolarizing drugs?
nondepolarizing meds act as an antagonist to acetylcholine at the myoneural junction in the muscle. Polarizing will mimick the effects of acetylcholine and cause membrane depolarization at the neuromuscular junction. In other words, look over your action potential.
Movement of arms and legs what major neurotransmitter involved?
Skeletal muscles move via action potential that is conducted by axons to the neuromuscular junction and across the synaptic gaps of efferent motor neurons. The main neurotransmitter responsible for this job is acetylcholine.
