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Voluntary muscle contraction is controlled by the central nervous system. The brain sends signals, in the form of action potentials, through the nervous system to the motor neuron that innervates several muscle fibers.
Acetylcholine (ACh) is commonly secreted at neuromuscular junctions, the gaps between motor neurons and muscle cells, where it stimulates muscles to contract (by opening gated positive ion channels).
What else can I help you with?
What specific event initiates the contraction?
The specific event that initiates a muscle contraction is the release of calcium ions within the muscle cell. This triggers a series of chemical reactions that ultimately lead to the sliding of actin and myosin filaments, resulting in muscle contraction.
What neurotransmitter causes muscle movement?
Acetylcholine is the primary neurotransmitter responsible for muscle movement. It is released from motor neurons at the neuromuscular junction to stimulate muscle contraction.
What neurotransmitter neuron to muscle cell?
The neurotransmitter acetylcholine is released from neuron axon terminals and binds to nicotinic receptors on muscle cells, triggering muscle contraction.
What do you think the effect of breaking down acetylcholine is on muscle contraction?
Breaking down acetylcholine can lead to muscle relaxation because acetylcholine is a neurotransmitter that stimulates muscle contraction. When acetylcholine is broken down, the signal for muscle contraction is reduced, resulting in muscle relaxation.
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 is the neurotransmitter released at the motor end plate?
Acetylcholine is the primary neurotransmitter released at the motor end plate, where it binds to receptors on muscle cells to initiate muscle contraction.
Neurotransmitter used to cause muscle contraction?
A neurotransmitter that causes muscle movement is called Acetylcholine. Acetycholine acts as on both the central nervous system and the peripheral nervous system.
Which neurotransmitter is responsible for the excitatory phase of muscle contraction a. dopamine b. serotonin c. GABA d. none of the above?
None of the above. The neurotransmitter responsible for the excitatory phase of muscle contraction is acetylcholine. It is released from motor neurons at the neuromuscular junction to stimulate muscle fibers.
What initiates the contraction of cardiac muscle?
The contraction of cardiac muscle is initiated by electrical signals from the heart's natural pacemaker, the sinoatrial node, which causes the muscle cells to contract in a coordinated manner, pumping blood throughout the body.
Is calcium a neurotransmitter responsible for muscle contraction?
Potassium deficiency more likely, but yes.
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 neurotransmitter in a somatic motor pathway?
The neurotransmitter in a somatic motor pathway is acetylcholine. It is released by motor neurons at the neuromuscular junction to stimulate muscle contraction.
