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Can a myelinated axon have a larger diameter than an unmyelinated axon?
Yes, a myelinated axon can have a larger diameter than an unmyelinated axon. Myelin sheath covers the axon, and the diameter of the axon itself can vary independently of myelination. The larger diameter of a myelinated axon allows for faster conduction of nerve impulses compared to unmyelinated axons.
Where do axon collaterals emerge on a myelinated nerve?
Axon collaterals emerge from the main axon at regular intervals called Nodes of Ranvier on a myelinated nerve. These points are where the myelin sheath is interrupted, allowing axon collaterals to branch off and communicate with other neurons or muscle fibers.
Which connective tissue layer directly surrounds each axon in a nerve?
A nerve is an enclosed, cable-like bundle of axons in the peripheral nervous system. Within a nerve, each axon is surrounded by a layer of connective tissue called the endoneurium.
What composed of a cell bodydendritesand axon?
Nerve cell or neuron
How does myelin insulate an axon to enhance the speed and efficiency of nerve impulse conduction?
Myelin is a fatty substance that wraps around the axon of a neuron, forming a protective sheath. This insulation helps to speed up the transmission of nerve impulses by allowing the electrical signal to jump from one node of Ranvier to the next, rather than traveling along the entire length of the axon. This process, known as saltatory conduction, increases the speed and efficiency of nerve impulse conduction.
Can a myelinated axon have a larger diameter than an unmyelinated axon?
Yes, a myelinated axon can have a larger diameter than an unmyelinated axon. Myelin sheath covers the axon, and the diameter of the axon itself can vary independently of myelination. The larger diameter of a myelinated axon allows for faster conduction of nerve impulses compared to unmyelinated axons.
What is the difference between a nerve dendrite and a nerve axon structurally?
The nerve axon is the main nerve from where the dendrites originate.
Axon is what?
An axon (or axone) is a nerve fibre which is a long, slender projection of a nerve cell, which conducts nerve impulses away from the body of the cell to a synapse.
Why does the frog sciatic nerve give a graded response?
The frog schiatic nerve gives a graded response because the nerve is a bundle of axons and not a single axon (thus it does not show the all or none response of an axon-either generating an action potential or not). If one axon is generating an action potential then a small nerve impulse is witnessed, if all axons are simultaneously generating action potentials then a large nerve impulse is witnessed. Thus the nerve impulse is graded (it can be none, small, medium, large, larger, maximal).
What does the nerve cell include?
The nerve cell can be thought of as just the nerve body, which is the main part of the nerve cell. The nerve cell is also known as a neuron. The entire neuron includes an axon, nerve body, dendrites, and axon terminals.
Can a nerve fiber survive without its cell or its axon?
No, a nerve fiber cannot survive without its cell body or axon. The cell body provides nutrients and support to the axon, while the axon is responsible for transmitting signals. Without either of these components, the nerve fiber would no longer function.
How can you the word axon in a sentence?
The axon carries nerve impulses away from the cell body.
What is the name of the area where nerve impulses arises?
receptive region?
What are the parts of a nerve cell?
the parts of the nerve cell are cell body,dendrites,and axon, axon teminals, nucleus,
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.
Why are nerve fibers sometims more than a meter in length?
No neuron ever has more than one axon; however in invertebrates such as insects or leeches the axon sometimesconsists of several regions that function more or less
What influences the speed of a nerve impulse?
the diameter of an axon
