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What activation of a motor neuron during the processing of a reflex action?
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What are the 5 steps to a reflex?
Arrival of stimulus, Activation of a sensory neuron, Information processing by an interneuron, Activation of a motor neuron, The response by an effector. Straight out of my anatomy text book.
What are the 5 steps to a reflex arc?
Arrival of stimulus, Activation of a sensory neuron, Information processing by an interneuron, Activation of a motor neuron, The response by an effector. Straight out of my anatomy text book.
What ion causes re polarization of the neuron during an action potential?
K+
A neuron will generate action potentials when it?
A neuron will generate action potential when it is stimulated by a neurotransmitter.
What is the interval called during which a neuron is dormant after an action potential has been completed?
Resting potential
How does serotonin receptor down-regulation have an antidepressant effect if it results in a decrease in post-synaptic neuron activation?
The serotonin receptor down-regulation has an antidepressant effect if it results in a decrease in post-synaptic neuron activation by activation of the 5-HT receptors within the rostral ventrolateral medulla.
What is the period of time during which the neuron cannot generate another action potential called?
refractory period
What is the basic function of a neuron?
A neuron is an electrically excitable cell, that transmits signals (after processing) to another neuron or tissue. It sends out information to the brain.
What do resting and action potentials depend on?
The resting and action potentials depend on the balance of charges of the area outside the neuron and inside the neuron. A resting potential is when the neuron is more negatively (approximately -70mv) charged than the area outside the neuron. The action potential occurs when sodium ions rush into the neuron, causing the polarity to be reversed. When there is no difference in charge between the area inside the neuron and the area outside the neuron, no action potentials can be started by that neuron.
Action potential is generated by the movement of?
An action potential is propagated in a neuron through the activation of various voltage-gated and ligand-gated ion channels. Examples include sodium and calcium channels and nicotinic-acetylcholine receptors.
What happens if myelin sheath is damage?
Two things, 1, the conduction speed of the neuron will be reduced. 2, the neuron will be subject to 'activation' from extraneous sources.
What happens if the myelin sheath is damaged?
If the myelin sheath is damaged, nerve signals may slow down or be disrupted, leading to problems with movement, sensation, and coordination. This can result in various neurological symptoms, such as weakness, numbness, and tingling. In severe cases, it can lead to conditions like multiple sclerosis.
