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What happens to the muscle membrane when acetylcholine binds to receptors at the motor plate?
Wiki User
∙ 8y ago
When acetylcholine binds to receptors at the motor plate, this binding opens ligand-gated ion channels on the motor end plate, ions diffuse through the open ligand gated ion channels, and the flow of ions causes the motor end plate to reach threshold and an action potential is generated at the motor end plate.
Wiki User
∙ 8y ago
When acetylcholine binds to receptors at the motor plate, it triggers the opening of ion channels in the muscle membrane. This allows sodium ions to flow into the muscle cell, leading to depolarization of the membrane and initiation of a muscle action potential. Subsequently, this action potential travels along the muscle cell membrane, leading to muscle contraction.
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What is the chemical transmitter released at the neuromuscular junction?
Acetylcholine is the primary chemical transmitter released at the neuromuscular junction. It binds to acetylcholine receptors on the muscle cell membrane, leading to muscle contraction.
The chemical that transmits the signal across the neuromuscular junction is called?
Acetylcholine is the chemical that transmits signals across the neuromuscular junction. It binds to receptors on the muscle cell membrane, leading to muscle contraction.
What is the neurotransmitter used at the neuro muscular junction is?
The neurotransmitter used at the neuromuscular junction is acetylcholine. It is released from the motor neuron terminals and binds to receptors on the muscle cell membrane, leading to muscle contraction.
What is the transmission of the stimulus at the neuromuscular junctions involves?
The transmission of the stimulus at the neuromuscular junction involves the release of acetylcholine from the motor neuron, binding to acetylcholine receptors on the muscle cell membrane, causing depolarization of the muscle cell, and ultimately leading to muscle contraction.
Chemical released to stimulate muscle contraction?
Acetylcholine is the primary neurotransmitter released by motor neurons at the neuromuscular junction to stimulate muscle contraction. It binds to receptors on the muscle cell membrane, initiating a series of events that ultimately lead to muscle contraction.
At the neuromuscular junction, the muscle contraction initiation event is?
binding of acetylcholine to membrane receptors on the sarcolemma
What is the chemical transmitter released at the neuromuscular junction?
Acetylcholine is the primary chemical transmitter released at the neuromuscular junction. It binds to acetylcholine receptors on the muscle cell membrane, leading to muscle contraction.
The chemical that transmits the signal across the neuromuscular junction is called?
Acetylcholine is the chemical that transmits signals across the neuromuscular junction. It binds to receptors on the muscle cell membrane, leading to muscle contraction.
What is released to muscle cell receptors to trigger muscle contractions?
Acetylcholine
Where does the acetylcholine released for muscle contraction bind?
Sarcolema receptors
Chemical released to stimulate muscle contraction?
Acetylcholine is the primary neurotransmitter released by motor neurons at the neuromuscular junction to stimulate muscle contraction. It binds to receptors on the muscle cell membrane, initiating a series of events that ultimately lead to muscle contraction.
What happens when acetylcholine receptors are blocked?
Blocking acetylcholine receptors can lead to a decrease in cholinergic transmission in the body. This can result in muscle weakness, altered heart rate, and impairments in cognitive function. Blocking these receptors is a mechanism of action for certain medications, such as neuromuscular blocking agents used during surgery.
How does curare cause muscle paralysis?
Curare is a competitive inhibitor of acetylcholine. It fights with acetycholine for postsynaptic receptors.
What part of the muscle cell membrane contain acetylcholine receptors?
Acetylcholine receptors are located on the motor end plate of the muscle cell membrane. This specialized region is where the nerve cell communicates with the muscle cell, allowing for the initiation of muscle contraction in response to acetylcholine binding to its receptors.
What two structures approach each other at a neuromuscular junction?
At a neuromuscular junction, the motor neuron terminal and the muscle fiber membrane (sarcolemma) approach each other. The motor neuron releases the neurotransmitter acetylcholine, which binds to receptors on the muscle fiber membrane, initiating muscle contraction.
What effect does depolarization have on the motor end plate once action potentials arrive at the synaptic end bulb?
Depolarization at the motor end plate upon arrival of action potentials triggers the release of neurotransmitter acetylcholine into the synaptic cleft. This acetylcholine then binds to receptors on the muscle cell membrane, initiating muscle contraction by depolarizing the muscle cell membrane and allowing the action potential to propagate along the muscle fiber.
The signal to excite a muscle cell must cross the neuromuscular junction by the diffusion of acetylcholine across the?
The signal to excite a muscle cell involves the release of acetylcholine from the motor neuron into the synaptic cleft at the neuromuscular junction. Acetylcholine diffuses across the synaptic cleft and binds to receptors on the muscle cell membrane, leading to depolarization and muscle contraction. This process is crucial for transmitting signals from the nervous system to the muscle for movement.
