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acetylecholine
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The sites where a chemical substance is transmitted from the presynaptic terminal of an axon to the postsynaptic membrane of a muscle fiber are called?
The sites where a chemical substance is transmitted from the presynaptic terminal of an axon to the postsynaptic membrane of a muscle fiber are called neuromuscular junctions. At these junctions, the neurotransmitter acetylcholine is released from the presynaptic terminal and binds to receptors on the postsynaptic membrane, initiating muscle contraction.
Acetylcholine is an example of what neurotransmitter?
Acetylcholine is an example of a neurotransmitter that plays a key role in functions such as muscle movement, memory, and learning. It is released at neuromuscular junctions and in the brain to help facilitate communication between nerve cells.
Which neurotransmitter is released at the neuromuscular junction?
ACETYLCHOLINE
What type of muscle tissue has neuromuscular junctions?
skeletal muscle
Action potentials are conducted into a skeletal muscle fiber by?
C. neuromuscular junctions
What is an agrin?
An agrin is a protein involved in the neuromuscular junctions during embryonic development.
Do antibodies attack neuromuscular junctions in the rheumatoid arthiritis?
False; myasthenia gravis.
Into what does the neuron release its neurotransmitter at the neuromuscular junction?
The neuron releases its neurotransmitter into the synaptic cleft at the neuromuscular junction, which is the gap between the neuron terminal and the muscle cell. This neurotransmitter then binds to receptors on the muscle cell membrane, triggering muscle contraction.
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.
What neurotransmitter is released at the neuromuscular junction?
Acetylcholine is the primary neurotransmitter released at the neuromuscular junction. It is responsible for transmitting signals from motor neurons to muscle fibers, leading to muscle contraction.
In a neuromuscular junction synaptic vesicles in the motor neuron contain which neurotransmitter In a neuromuscular junction synaptic vesicles in the motor neuron contain which neurotransmitter?
In a neuromuscular junction, synaptic vesicles in the motor neuron contain the neurotransmitter acetylcholine (ACh). When an action potential reaches the motor neuron, ACh is released into the synaptic cleft and binds to receptors on the muscle fiber, leading to muscle contraction.
What are axon terminal clusters at the ends of neuromuscular junctions called?
Axon terminal clusters at the ends of neuromuscular junctions are called motor endplates. They are specialized structures where motor neurons communicate with muscle fibers to initiate muscle contractions.
