One neuron (A) transmits a nerve impulse at 40 meters per second and another neuron (B) conducts the impulse at 1 meter per second. Which neuron has myelinated axon?
Question
One neuron (A) transmits a nerve impulse at 40 meters per second and another neuron (B) conducts the impulse at 1 meter per second. Which neuron has myelinated axon?
Solution
The neuron that transmits a nerve impulse at a faster rate, in this case neuron A, is likely to have a myelinated axon. Myelination is a process where a fatty layer, called myelin, coats the axon of the neuron. This myelin sheath acts as an insulator and increases the speed at which nerve impulses (also known as action potentials) are conducted along the axon. Therefore, the neuron transmitting at 40 meters per second (neuron A) is likely to have a myelinated axon.
Similar Questions
Which of the following does not influence the time necessary for a nerve impulse to be transmitted? diameter of the axon length of the axon presence or absence of a myelin sheath presence or absence of nodes of Ranvier whether or not the impulse begins in the CNS
The speed of action potential conduction along an axon Blank______ on the myelination of the axon.Multiple choice question.dependsdoes not depend
In __________Blank axons, impulse conduction is uninterrupted along the entire axon; while in __________Blank axons, action potentials only occur at nodes of Ranvier.Multiple Choicemyelinated; unmyelinatedunmyelinated; myelinated
Which of the following is a factor in the velocity of nerve impulse conduction?
Neurons with a myelin sheath conduct nerve impulses afaster than neurons without myelin sheaths bslower than neurons without myelin sheaths cthe same speed as neurons without myelin sheaths din greater numbers than neurons without myelin sheaths
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.