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Space between synaptic end bulbs of axon terminal and sarcolemma?
The space between the synaptic end bulbs of an axon terminal and the sarcolemma is called the synaptic cleft. It is a small gap that neurotransmitters traverse to transmit signals between neurons and muscle cells. The neurotransmitters released from the axon terminal bind to receptors on the sarcolemma, triggering muscle contraction.
Does the impulse cross the neuromuscular junction when a muscle contracts?
No, the impulse traveling down the axon ends at the axon terminal but causes the axon terminal to release neurotransmitters. The neurotransmitters diffuse across the synaptic cleft causing the sarcolemma of the muscle to initiate its own impulse.
Does a stimulus traveling toward a synapse appear to open calcium ion channels in the axon terminal?
Yes, a stimulus triggers the opening of voltage-gated calcium channels in the axon terminal. When activated by an action potential, these channels allow calcium ions to enter the axon terminal, which then triggers the release of neurotransmitters into the synaptic cleft.
A nerve impulse starts at the dendrite then travels to the?
cell body, continues down the axon, and finally reaches the axon terminal. At the axon terminal, the impulse triggers the release of neurotransmitters to communicate with other neurons or muscles.
What structures meet at neuromuscular junction?
An axon and the sarcolemma.
In which direction does the message travel in the neuron?
it travels through the dendrite to the synaptic terminal to the axon
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.
The axon terminals of a nerve cell and the sarcolemma of a skeletal muscle cell join at the?
The axon terminals of a nerve cell and the sarcolemma of a skeletal muscle cell join at the neuromuscular junction. This is where the nerve impulse triggers the release of neurotransmitters, such as acetylcholine, which initiate muscle contraction by binding to receptors on the sarcolemma.
What is the difference between the terminal button and the axon terminal?
The terminal button, also known as the synaptic knob, is a small structure at the end of an axon that releases neurotransmitters into the synapse during neuronal communication. The axon terminal refers to the broader region at the end of the axon that includes the terminal button and the surrounding structures involved in synaptic transmission. While both terms are often used interchangeably, the axon terminal encompasses the entire end section of the axon, whereas the terminal button specifically refers to the site of neurotransmitter release.
What is an axon-terminal?
An axon terminal is the structure of a neuron (a single cell of the central or peripheral nervous system) at the end of it's axon that forms a synapse with another neuron. Generally, the axon terminal is the point at which a neuron passes information to the neurons with which it is connected.
What does not belong axon terminal synaptic knob bouton axon collateral?
Bouton does not belong as it refers to a swollen region along an axon where synapses are found, while axon terminal, synaptic knob, and axon collateral are all parts of the structure of a neuron.
What is the message that travels through the neuron?
An Impulse
