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The ion needed to initiate the release of a neurotransmitter into the synaptic cleft is?
Wiki User
∙ 13y ago
Ca2+
Wiki User
∙ 13y ago
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What is the ion needed to initiate the release of acetylcholine into the synaptic cleft called?
calcium - Ca2+
What causes the synaptic delay?
The cause of synaptic delay is attributed mainly to the time needed for the synaptic vesicles to release neurotransmitter into the synaptic cleft. While it can be considered a combination of binding to the presynaptic membrane (which is relatively a transient process) and subsequent exocytosis of the neurotransmitter, the main factor is release. Additionally, it does take a very short period of time for the neurotransmitter to diffuse across the synaptic cleft and bind to to its receptors on the post-synaptic membrane.
Why is the destrructuction of the neurotransmitter important in controllin the activities of the nervous system?
Firstly, we need the neurotransmitter at synaptic junctions to stimulate an action potential on the postsynaptic neurone. Continued amounts of neurotransmitter will keep Na+ diffusing in, and will keep the action potential resending when the period of refraction should be occurring.Therefore, if we do not destroy the neurotransmitter when it is not needed, a signal will keep being sent, and the effector muscle/gland will keep being stimulated.For example, touching a hot plate results may result in your bicep contracting to pull your arm away. If the neurotransmitter isn't destroyed, your bicep will keep contracting even after the event.
What neurotransmitter is needed most in Parkinson's disease?
dopaime
What is the energy needed by a system to initiate a process?
Your mother
What type of energy is needed to initiate photosynthesis?
Radiant energy
Why is chemical energy needed in all chemical reactions?
To initiate a chemical reaction an activation energy is necessary.
What does the activation energy for a reaction represent?
Activation energy is the amount of energy needed to start a reaction.
What kind energy begins photosynthesis?
solar energyLight energy is needed to initiate. This energy is stored as chemical energy
What three things are needed to initiate and sustain combustion?
A source of Fuel Compression and an Ignition source
Why is calcium needed for muscle contraction?
Yes, calcium is necessary for the release of neurotransmitters that cause a muscle to initiate a contraction. Calcium is also needed to bind to the troponin-tropomyosin complex causing it to change position so the myosin head can attach to the actin molecule which results in contraction.
What is synaptic varicosity referring to how synaptic varicosity changes in sensitisation of Aplysia?
I believe varicosity in the context of your question refers to the enlarged and tortuous vein, artery, or lymphatic vessel in the area of the synapse. Therefore in the aplysia synaptic junctions between the sensory and motor neurons experience long term facilition in response to 5-HT and long term depression in response to RMRFamide. Research has shown macromolecules synthesis is needed for expression of the long lasting structural changes in the sensory cells and that this synthesis is porportional with long term functional modulation of sensorimotor synapses.
