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What is the different between cytoplasm and axoplasm in nervous system?
The axoplasm is the cytoplasm of an axon.
What is an axoplasm?
An axoplasm is the cytoplasm of an axon - a nerve fibre which conducts nerve impulses away form the body of a cell, to a synapse.
Does a neuron have a axon?
Most neurons contain one axon. There have never been more than one found. However, some neurons contain no axon at all.
Are all of the neurons organelles restricted to the cell body?
No, neurons have organelles such as mitochondria, endoplasmic reticulum, and Golgi apparatus distributed throughout the cell, including the axon and dendrites. However, certain organelles like the nucleus and ribosomes are mostly concentrated in the cell body.
Where is the point on axon that a signal can be transmitted?
Signals are transmitted along the axon at the axon terminals or synaptic boutons. These structures are located at the ends of axon branches and contain neurotransmitter-filled vesicles that are released into the synapse to communicate with neighboring cells.
How many axons does each neuron have?
Most neurons have one axon, which can branch into multiple axon terminals to communicate with other neurons. However, there are some exceptions where neurons have more than one axon, such as in certain neurons within the peripheral nervous system.
What are the sacs that store chemicals in the axon terminal area?
The axon terminals contain chemicals, called "neurotransmitters," which are released in order for the cell to communicate with nearby cells.
What are axon tips?
Axon tips are the small structures located at the end of an axon, which are responsible for transmitting electrical impulses to other neurons or cells. They contain synaptic vesicles that store neurotransmitters, which are released into the synaptic cleft to communicate with neighboring cells. Axon tips are essential for the propagation of signals in the nervous system.
What does a neuron cell contain?
A typical neuron consists of a cell body (soma), dendrites, and an axon.
What would happen to part of an axon if it is cut so that it is no longer connected to its nerve cell?
there wouldn't be an impulse . This can be seen in the injury of the breaking of the backbone/cutting of the spinal cord . The grey matter of the spinal cord is composed of motor neuron and accessory (?) neuron axons, and when these are cut, the impulses cannot be transmitted to the dendrites of the next neuron, or for that matter the effector. This results in paralysis from the site of injury down.
What is the term used to describe the rounded areas on the ends of the axon terminals?
The term used to describe the rounded areas on the ends of the axon terminals is "synaptic end bulbs" or "synaptic boutons". These structures contain neurotransmitters that are released into the synapse to communicate with the next neuron.
Where are action potentials regenerated as they propagate along a myelinated axon?
First at the axon hillock where the neural impulse is initially triggered, and then at the nodes of Ranvier as the impulse continues to travel along the axon.(Note that the impulse travels as electrotonic conduction between the nodes of Ranvier, underneath the glial cells which myelinate the axon.)
