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Which structure contains vesicles with acetylcholine?
Synaptic vesicles in the axon terminals of neurons contain acetylcholine. Acetylcholine is a neurotransmitter that is released from these vesicles into the synaptic cleft to transmit signals to target cells or other neurons.
What is the stimulus for Acetylcholine release?
The stimulus for acetylcholine release is the action potential traveling down the axon of the presynaptic neuron. This depolarization causes calcium channels to open, allowing calcium ions to enter the axon terminal and trigger the release of acetylcholine into the synaptic cleft.
What chemicals are used to transmit impulses through the neurons?
the transmission of a nerve impulse along a neuron from one end to the other occurs as a result of chemical changes across the membrane of the neuron. The membrane of an unstimulated neuron is polarized that is there is a difference in electrical.
What happens when sodium enters a neuron?
When sodium enters a neuron, it triggers depolarization of the cell membrane, which leads to an action potential being generated. This action potential then travels along the neuron, allowing for communication between different neurons or between a neuron and a muscle cell. Sodium influx is a key step in the process of nerve signal transmission.
What triggers the release of acetylcholine from a synaptic terminal?
The release of acetylcholine from a synaptic terminal is triggered by the arrival of an action potential at the terminal. This depolarization causes voltage-gated calcium channels to open, leading to an influx of calcium ions into the terminal. The increased calcium levels then trigger the release of acetylcholine vesicles into the synaptic cleft.
What does axon terminal of motor neuron release?
The axon terminal of a motor neuron releases the neurotransmitter acetylcholine. Acetylcholine is responsible for transmitting signals from the motor neuron to muscle fibers, leading to muscle contractions.
What is the motor neuron ending?
Motor neuron endings are specialized structures at the terminal ends of motor neurons that form synapses with muscle fibers. These endings release neurotransmitters, such as acetylcholine, to stimulate muscle contractions. They play a crucial role in transmitting signals from the nervous system to muscles, allowing for voluntary movement.
A chemical that destroys acetylcholine a brief period after its release by the axonal endings is?
Acetylcholinesterase is the enzyme that breaks down acetylcholine at the synaptic cleft, terminating its action. This allows for the proper regulation of acetylcholine levels in the synaptic space and prevents continuous stimulation of the postsynaptic neuron.
Which structure contains vesicles with acetylcholine?
Synaptic vesicles in the axon terminals of neurons contain acetylcholine. Acetylcholine is a neurotransmitter that is released from these vesicles into the synaptic cleft to transmit signals to target cells or other neurons.
What is the role of acetylcholine in skeletal muscle contractions?
acetylcholine as far as i know is a neurotransmitter that ativates the mscle cells.
When an action potential arrives at the neuromuscular junction the most immediate response?
is the release of acetylcholine from the motor neuron into the synaptic cleft.
Transferring messages from a motor neuron to a leg muscle requires the neurotransmitter known as?
acetylcholine
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.
The axon of each motor neuron has numerous endings are called what?
The tip of a neuron's axon culminates in several endings call terminal buttons. When an action potential is conducted down the axon, this is where it goes.
What is a critical event that occurs at the neuromuscular junction?
Acetylcholine is released by axon terminals of the motor neuron.
Just what does pass from neuron to the muscle cells?
via chemicals called neurotransmitters, expressed at sites called synapses, which are tiny gaps between a neuron and another neuron or a muscle cell.
Which of these junctions represents the connection between the tip of a neuron and a skeletal muscle cell from which Acetylcholine diffuses?
Neuromuscular
