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When electrical signal reaches end of nerve fiber a chemical what is secreted?
When the action potential (electrochemical signal) reaches the end of the nerve, calcium channels open, causing synaptic vesicles containing neurotransmitters to bind with the neuronal membrane. When this happens, the neurotransmitters are released into the synaptic cleft (process is called exocytosis). Once in the synaptic cleft, they can bind with postsynaptic neuron or muscle cell receptors.
When a nerve impulse reaches the end of the axon the tiny sacs that store the neurotransmitters move to the surface and release the neurotranmistters These tiny sacs that store the neurotransmitters?
are called synaptic vesicles. They contain specific neurotransmitters that are released into the synaptic cleft when the nerve impulse reaches the end of the axon. The neurotransmitters then bind to receptors on the neighboring neuron, continuing the signal transmission.
How does a dendrite receive a signal?
Dendrites receive signals from post-synaptic nerve
What does Synaptic Vesicles contain?
Synaptic vesicles contain neurotransmitters, which are chemicals that transmit signals between nerve cells (neurons) in the brain and nervous system. When a nerve impulse reaches the end of a neuron, synaptic vesicles release neurotransmitters into the synapse, where they bind to receptors on the neighboring neuron to transmit the signal.
When the what reaches the end of the axon the neurotransmitter is released?
When the _____________reaches the ends of the axon the neurotransmitter is released and it diffuses to the muscle cell membrane to combine with receptors there?Sarcolemma
What accomplishes the transmission of the nerve signal across the synapse?
The release of 'neurotransmitter substances' from an axon's perifery which traverse the synaptic cleft - the space between axon and adjoining dendrite - to both affect and effect the adjoining dendritic "perifery" which then re-initiates signal propagation to the next bunch of exonic nerve "endings".
What transport processes is operating in the transmission of a nerve message from the fingertips to the brain?
The transmission of a nerve message from the fingertips to the brain involves both electrical and chemical transport processes. Initially, the message is transmitted as an electrical signal called an action potential along the nerve cells through a process known as depolarization. Once the signal reaches the synaptic junction between nerve cells, it is converted into a chemical signal in the form of neurotransmitters that cross the synapse to communicate with the next nerve cell in the chain, ultimately reaching the brain.
What transfers a signal from the afferent nerve to the efferent nerve?
Neurotransmitters are released from the terminal bouton of the afferent nerve, cross the synaptic cleft, and bind with receptors on the efferent nerve. If enough neurotranmitter binds to reach the minimum potential, an action potential is created and the signal moves down the efferent nerve.
What is the chemical produced between nerve cells?
a neurotransmitter called acetylcholine (ACh) is produced between nerve cells. This neurotransmitter carries the signal (in chemical form) at the synaptic junction.
When an action potential reaches the nerve terminal, what happens to the neurotransmitter release?
When an action potential reaches the nerve terminal, it triggers the release of neurotransmitters into the synapse.
What is the functions of neurotransmitter?
The neurotransmitters are stored in tiny sac-like structures called vesicles at the end of axons. When an impulse, or nerve signal, reaches the end of the axon, the vesicles release a neurotransmitter into the small space between the adjoining cells (synaptic gap). Neurotransmitters diffuse across the synapse and bind to receptors in the receiving cell that are specific for the neurotransmitter.
How is the nerve signal transmitted across the synaptic cleft?
Nerve impulses are collected from neighbouring neurons through branched extensions or 'dendrites'. They enter the neuronal cell body for processing and are then propagated along... travel at definite rates along axons which split or 'bifurcate' into thousands of branches which terminate as 'axon terminals' also known as 'synaptic knobs' and 'synaptic buttons'. Axon terminals connect with dendrites of neigbouring neurons at specialized points of contact known as 'neural junctions', 'synaptic junctions' or 'synapses'. Nerve impulses are collected from neighbouring neurons through branched extensions or 'dendrites'. They enter the neuronal cell body for processing and are then propagated along... travel at definite rates along axons which split or 'bifurcate' into thousands of branches which terminate as 'axon terminals' also known as 'synaptic knobs' and 'synaptic buttons'. Axon terminals connect with dendrites of neigbouring neurons at specialized points of contact known as 'neural junctions', 'synaptic junctions' or 'synapses'.
