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Which of these axons will conduct an action potential most quickly?
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∙ 10y ago
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Wiki User
∙ 10y ago
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Dendrites conduct both graded and action potential?
no, dendrites and cell bodies can only have graded potential. action potential only occurs in axons
Also called a nerve impulse transmitted by axons?
action potential
What is the association of axons with nerves?
Axons conduct the nerve impulses, or action potentials, to the axon terminals and the synaptic cleft.
What happens in the neurolemma as the result of an action potential?
It provides insulation to the axons and dendrites during depolarization or action potential.
Do axons carry action potentials away from the cell body?
The areas that have had the action potential are refractory to a new action potential.
The velocity of the action potential is fastest in which of the following axons?
a small myelinated axon
Which type of axon will velocity of action potential conduction be the fastest?
Myelinated axons with the largest diameter
Why does action potential's move through axons in only one direction?
the axons and dentrites would get mixed up and the brain would be thinking in two ways and we would be confused to which one was which
How does a myelin sheath affect nerve impulses?
Myelin sheath does several things that affect the speed of an action potential.It acts as an insulator around a neuron axon, thereby focusing the propagation of the action potential along the axis of the axon.The action potential "leaps" from one node of Ranvier (the node in between two myelinated segments) to the next, and to the next, and to the next, and so on, faster than the action potential can propagate as a wave along an unmyelinated axon of the same diameter.The regions along a myelinated axon depolarize locally and successively, thus allowing an action potential to travel along an axon using less energy, which in turn allows the neuron to repolarize more quickly, and thus be ready to conduct the next action potential sooner, thereby increasing the overall speed of information transmission.
How many efferent neurons are used in a somatic action potential?
The autonomic reflex contains two. (preganglionic and postganglionic)
What is meant when axon is described as myelinated?
Most axons are covered with a protective sheath of myelin, a substance made of fats and protein, which insulates the axon. Myelinated axons conduct neuronal signals faster than do unmyelinated axons.
What are axons that conduct impulses from the cerebrum to lower parts of the CNS?
Axons that conduct impulses from the cerebrum to lower parts of the central nervous system (CNS) are called descending axons. These axons transmit motor commands and information from the brain down to the spinal cord and other lower regions of the CNS. They play a crucial role in controlling voluntary movement and coordinating various bodily functions.
