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Do you want to know the parts of a nerve?
Synapses are the junctions formed with other nerve cells where the presynaptic terminal of one cell comes into 'contact' with the postsynaptic membrane of another. It is at these junctions that neurons are excited, inhibited, or modulated. There are two types of synapse, electrical and chemical.
Electrical synapses occur where the presynaptic terminal is in electrical continuity with the postsynaptic. Ions and small molecules passing through, thus connecting channels from one cell to the next, so that electrical changes in one cell are transmitted almost instantaneously to the next. Ions can generally flow both ways at these junctions i.e. they tend to be bi-directional, although there are electrical junctions where the ions can only flow one way, these are know as rectifying junctions. Rectifying junctions are used to synchronise the firing of nerve cells.
Chemical synaptic junction is more complicated. The gap between the post- and presynaptic terminals is larger, and the mode of transmission is not electrical, but carried by neurotransmitters, neuroactive substances released at the presynaptic side of the junction. There are two types of chemical junctions. Type I is an excitatory synapse, generally found on dendrites, type II is an inhibitory synapse, generally found on cell bodies. Different substances are released at these two types of synapse. The direction of flow of information is usually one way at these junctions.
Each terminal button is connected to other neurons across a small gap called a synapse. The physical and neurochemical characteristics of each synapse determines the strength and polarity of the new input signal. This is where the brain is the most flexible, and the most vulnerable. Changing the constitution of various neurotransmitter chemicals can increase or decrease the amount of stimulation that the firing axon imparts on the neighbouring dendrite. Altering the neurotransmitters can also change whether the stimulation is excitatory or inhibitory.
What else can I help you with?
How sensitive are the clitoris nerve endings compared to other parts of the body?
The nerve endings in the clitoris are more sensitive than those in other parts of the body.
Does your brain have nerve endings?
No, the brain itself does not have nerve endings. Nerve endings are found in other parts of the body, such as the skin, that send signals to the brain.
Are there nerve endings in the brain?
No, the brain itself does not have nerve endings. Nerve endings are found in other parts of the body, such as the skin and organs, but not in the brain itself.
What is the function of the olfactory nerve in the human body?
The olfactory nerve is responsible for the sense of smell in the human body. It transmits signals from the nose to the brain, allowing us to detect and identify different odors.
What are Bundles of axons are called?
Bundles of axons are called nerves. Nerves transmit electrical signals between the brain and other parts of the body.
What are the parts of nerve or neurons?
A neuron is a nerve cell, so it has all the parts of an animal cell, plus some specialized parts: axon, dendrites, and perhaps a myelin sheath for insulation.
3 Describe how would you identify the optic nerve in the dissection?
To identify the optic nerve in a dissection, locate the eyeball and trace the nerve posteriorly, towards the brain. The optic nerve is typically found at the back of the eyeball, exiting through the optic disc in the retina. It appears as a white, cylindrical structure that connects the eye to the brain.
How do you identify a card catalog?
identify the parts of card catalog
How do identify a card catalog?
identify the parts of card catalog
How sensitive are the clitoris nerve endings compared to other parts of the body?
The nerve endings in the clitoris are more sensitive than those in other parts of the body.
Identify Three symptoms of nerve agent exposure?
A runny nose, vomiting, shortness of breath, are three symptoms of nerve agent exposure.
Identify 3 symptoms of nerve agent exposure?
A runny nose, vomiting, shortness of breath, are three symptoms of nerve agent exposure.
How many main parts does a nerve cell have?
it has three
What are highly branched parts of the nerve cells?
axon
Does your brain have nerve endings?
No, the brain itself does not have nerve endings. Nerve endings are found in other parts of the body, such as the skin, that send signals to the brain.
Are there nerve endings in the brain?
No, the brain itself does not have nerve endings. Nerve endings are found in other parts of the body, such as the skin and organs, but not in the brain itself.
What name of legs nerve?
The nerve that supplies sensation and movement to the leg is called the sciatic nerve. It is the largest nerve in the body and branches into smaller nerves that innervate different parts of the leg.
