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True or False A neurotransmitter substance crosses the synaptic cleft between a nerve and muscle fiber and stimulates the nerve to have an action potential?
False
Is it the synaptic cleft that contains vesicles filled with acetylcholine?
The synaptic knob contains vesicles filled with neurotransmitters. Therefore, Acetylcholine is the neurotransmitter that stimulates skeletal muscle to contract. It is released into the synaptic clefts between motor neuron axons and motor end plates.
What type of nerve stimulates muscle cells to contract?
Somatic type of nerves stimulate the muscle cells to contract.
The narrow space between the synaptic terminal and the muscle fiber is the?
synaptic cleft, where neurotransmitters are released by the synaptic terminal and bind to receptors on the muscle fiber to trigger a 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 is the enzyme found in the synaptic space between a neuron and a muscle fiber that breaks down the excitatory neurotransmitter chemical that originally caused the muscle fiber to contract called?
acetylcholinesterase
What event stimulates the contraction of cardiac muscle?
The event that stimulates the contraction of cardiac muscle is the electrical signal generated by the sinoatrial (SA) node in the heart, also known as the pacemaker of the heart. This signal causes the heart muscle cells to contract and pump blood throughout the body.
What system stimulates muscle to contract and interprets information from sensory organs?
The central nervous system.
What is the narrow space that separates the motor neuron and the skeletal muscle fiber in a neuromuscular junction called?
Neuromuscular junction or neuromuscular synapse
Space between a neuron and muscle?
synaptic cleft
What is the space between the nerve and muscle called?
The space between a nerve and muscle is called the neuromuscular junction. This is where the nerve endings release chemical messengers called neurotransmitters, which signal the muscle to contract.
How does the neural signal get across the neuromuscular junction?
When an action potential reaches the end of a motor neuron, it triggers the release of neurotransmitters (acetylcholine) into the synaptic cleft. These neurotransmitters bind to receptors on the muscle cell membrane, causing depolarization of the muscle cell and ultimately leading to muscle contraction.
