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Many nerve cells are of the basic type illustrated above. Some kind of stimulus triggers an electric discharge of the cell which is analogous to the discharge of a capacitor. This produces an electrical pulse on the order of 50-70 millivolts called an action potential. The electrical impulse propagates down the fiber-like extension of the nerve cell (the axon). The speed of transmission depends upon the size of the fiber, but is on the order of tens of meters per second - not the speed of light transmission that occurs with electrical signals on wires. Once the signal reaches the axon terminal bundle, it may be transmitted to a neighboring nerve cell with the action of a chemical neurotransmitter.
The dendrites serve as the stimulus receptors for the neuron, but they respond to a number of different types of stimuli. The neurons in the optic nerve respond to electrical stimuli sent by the cells of the retina. Other types of receptors respond to chemical neurotransmitters.
The cell body contains the necessary structures for keeping the neuron functional. That includes the nucleus, mitochondria, and other organelles. Extending from the opposite side of the cell body is the long tubular extension called the axon. Surrounding the axon is the myelin sheath, which plays an important role in the rate of electrical transmission. At the terminal end of the axon is a branched structure with ends called synaptic knobs. From this structure chemical signals can be sent to neighboring neurons.
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Is the site of the nucleus the nerve cell body?
The the exception of red blood cells, all cells have a nucleus. But in a nerve cell, or neuron, the nucleus is located within the cell body.
Where is the nerve centre located in the human body?
the brain and spinal cord.
The association nerve cells relay information from sensory nerve cells to motor nerve cells?
True. A+
What are the nerve cells that react to gases?
Olfactory nerve cells
What are blood cells and nerve cells called?
red blood cells and a nerve cell.
Where are association nerve cells located?
in your chast
Association nerve cells are located in the brain and where else?
Yes. Association nerve cells are found only in the spinal cord and brain.True
Does the synapse occur between nerve cells?
I wouldn't use the word "occur" since a synapse is a structure, not an event, but yes, it is located between nerve cells, or more specifically, it is where the dendrites of two nerve cells meet.
Where are associated nerve cells located in the body?
spinal cord and brian
Why are nerve cells long?
Nerve cells have to be long enough to extend from where they are located in the body, the hands and feet for example, to the spinal chord or brain. Some nerve cells in a giraffe may be ten feet long. Others may be very short.
Is the site of the nucleus the nerve cell body?
The the exception of red blood cells, all cells have a nucleus. But in a nerve cell, or neuron, the nucleus is located within the cell body.
Where is the nerve cell located?
there are thousands of nerve cells in the body theyre inside and out, they are what make you see, smell,hear,touch and taste.
Are neurons located in an atoms nucleus?
Neurons are nerve cells. Unless you mean neutrons which are located in the nucleus of an atom.
What is the difference between nerve cells and nerve?
a nerve tends to refer to a group of nerve cells.
What is a connector nerve?
Connector nerve cells connect the sensory nerve cells with motor nerve cells and allow for decision making.
The association nerve cells relay information from sensory nerve cells to motor nerve cells?
True. A+
Where is the nerve centre located in the human body?
the brain and spinal cord.
