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Yes, the impulses leaving nerve cells, known as action potentials, travel along axons. Axons are long, slender projections of nerve cells that conduct electrical signals away from the cell body. The action potential is propagated down the axon through a process involving the rapid opening and closing of ion channels, allowing ions to flow in and out of the cell membrane. This process ensures the efficient transmission of signals to other neurons, muscles, or glands.
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What will conduct a nerve impulse faster thick or thin axon?
Thick axons conduct nerve impulses faster than thin axons because they have a lower resistance to the flow of electrical signals. This allows for quicker transmission of signals along the axon.
What cell type is responsible for the transmission of elecrochemical impulses?
Neurons are the cell type responsible for the transmission of electrochemical impulses within the nervous system. These specialized cells are capable of transmitting signals through electrical and chemical processes along their axons.
What allows the action potential to travel quickly?
The action potential travels quickly due to the myelination of axons and the presence of nodes of Ranvier. Myelin sheaths insulate the axon, allowing electrical impulses to jump between these nodes, a process known as saltatory conduction. This significantly increases the speed of signal transmission compared to unmyelinated axons, where the action potential must propagate continuously along the membrane. Additionally, the large diameter of some axons can also enhance conduction speed.
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.
Why is an axon unmyelinated?
An axon is unmyelinated because it lacks a myelin sheath, which is a fatty insulating layer that speeds up the transmission of electrical impulses. Unmyelinated axons are generally smaller in diameter and conduct nerve impulses more slowly compared to myelinated axons.
Saltatory conduction refers to the conduction of impulses in?
It is the "skipping" pattern that impulses follow to travel down nerve axons.
Does impulse travel faster along myelinated neuron?
Yes, impulses travel faster in myelinated axon rather than in unmyelinated. It is mostly due to nodes of Ranvier. Instead of travel along the axon, in myelinated axon impulses "jump" from node to node. Also there are two types of myelinated axons: type A and type B. (Type C in unmyelinated axon.) Type A is the fastest among all of them.
Do Axons carries impulses toward the nerve cell body?
No, axons carry impulses away from the nerve cell body.
What are Nadis?
Nadis are nerves. Prana Shakti is supposed to flow through the nadis which means the electrical impulses that travel through the axons.
What direction does nerve impulse travel?
Along a nerve cell, the impulse travels from the axon to the dendrites and then again to the axons through the synapse.
Does a dendrite carry impulses away?
They carry impulses to the cell body. Axons carry impulses away from the cell body.
What is the fatty tissue that covers axons and speeds up impulses as they travel from cell to cell?
The fatty tissue that covers axons and speeds up impulses is called myelin. Myelin acts as an insulating layer, which helps to increase the speed and efficiency of nerve impulse transmission along the axon.
What moves across axons in the nervous system?
Electrical impulses move across axons in the nervous system.
A factor that determines the rate of impulse propagation or conduction velocity along an axon?
One factor that determines the rate of impulse propagation or conduction velocity along an axon is the myelination of the axon. Myelinated axons conduct impulses faster than unmyelinated axons due to the saltatory conduction mechanism, where the action potential jumps from one node of Ranvier to the next. Another factor is the axon diameter, as larger diameter axons have lower resistance to ion flow and can conduct impulses faster compared to smaller diameter axons.
What has an effect on the speed of impulse conduction?
Several factors can affect the speed of impulse conduction along a neuron. These include the diameter of the axon (larger axons transmit impulses faster), myelination (myelinated axons conduct impulses faster than unmyelinated axons), temperature (higher temperatures generally increase conduction speed), and the presence of nodes of Ranvier (which allow for saltatory conduction, speeding up the process).
What portion a neuron conducts nerve impulses away from the neuron?
axons
What provides for the transmission of nerve impulses way from the cell body?
'Axons'
