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Nerves
Nerves are thread-like structures that form a network of pathways that transmit information from the brain to the body and the body to the brain, in the form of electrical impulses.
1,605 Questions
Where are synapses located between in the brain?
Between the axon terminals and the dendrite for one, there lay the chemical synapse.
What event occurs during synapsis?
A synapse is a gap between one neuron and another. To communicate, a neurotransmitter has to be made and then used as a tool to stimulate the second neuron.
Synapses contain synaptic vesicles and other organelles such as the mitochondria.
Chemical neurotransmitters are manufactured by neurons in the main part of the cell, then stored in little bundles called synaptic vesicles and transferred to the synapses. They are then released into the space between the two neurons.
One type of neurotransmitter may stimulate and another type may be the opposite.
How is vision loss due to optic nerve inflammation treated?
I am diabetic (Cat-2) and had Glucoma problem, which was diagonosed almost 2 years back. Right Eye 30 % & Left Eye 10%. The Optholomogist had prescribed eye drops (Lumigan 0.01%) one drop at bed time. Few days back, I noticed a sudden eyesight loss in my right eye at least 90 % and in left 40%. I immediately visited the Optholomogist and he further prescribed an other type of eye drops (Alphagan P 0.1%) to be used one drop in the morning & bed time, to normalize the eye pressure, which was very high. I have been informed that the damage already done to Optic Nerve is not cureable and it was due to a minor stroke. I have come to know that a medicine is available in Homeopathic, which can cure and that is (Phosphorus 1M) eye drops. I need it with necessary instructions and precautions.
Do pinched nerves cause bumps on your back?
Yes. A pinched nerve can cause a muscle to contract. The "bump" that can be felt is actually the center of the tightened muscle. Massage may be used to relax the muscle. Relieving the pinched nerve is of course the better answer.
The proper grammar is "what ARE electrical impulses?"
To help you with your question, however, there are different types of impulses, such as ones in the heart, and ones in the brain.
This answer isn't found on the internet, so I would try submitting it to SHARECARE.
Does high white cell count protein in blood pain in bones mean cancer?
It is not necessarily cancer. High count of white protein cells in blood indicates that the body is struggling against some kind of infection or any disease. The reason behind this is that the white protein cells are the cells that are responsible for immunity of the body and fight against any harmful or foreign body. So whenever body is attacked by any infection or disease the body fights against it by producing more and more white cells. Yeah but it is also a test that is performed to examine cancer.
What nerves innervate the diaphragm?
The phrenic nerve, arising from C3,C4,C5. Damage to the brachial plexus can result in temporary or permanent paralysis of the diaphragm
What are the Difference of neurons and neuroglia cells?
Neurons are conducting cells in the nervous system and neuroglia do not conduct, but are helper cells to the neurons.
No they do not. Information (neurotransmitters) is electrically fired over to the next neuron.
Nerve damage is very bad, and often fatal. It is the leading cause of heart disease & stroke.
A withdrawal reflex employs what neurons?
Withdrawal reflex or flexor reflex employs sensory neuron, interneuron and motor neuron.
Where the cranial nerves belong?
Cranial Nerves 1-2
Cranial Nerves 3-4 belong to the midbrain.
Cranial Nerves 5-8 belong to the pons.
Cranial Nerves 9-12 belong to the hindbrain.
What is a network of spinal nerves called?
nerve plexuses
The spinal nerves emerge from the spinal cord at the brain stem, and between each vertebrae.
There are several types of synapses in the body. The most commonly discussed type is the chemical synapse, but other types of synapses include electrical synapses and immunological synapses. Because chemical synapses are the most commonly discussed synapses in general, that's probably what this question is referring to.
A chemical synapse is a small gap, or commonly referred to as a connection, between two cells that allows for the first cell (the presynaptic cell) to communicate with the second cell (the postsynaptic cell) through a chemical signal. These chemical signals are called neurotransmitters, and once they are released by the presynaptic cell, they act on the postsynaptic cell through specialized protein molecules called neurotransmitter receptors.
The actions triggered by a neurotransmitter binding its receptor on the postsynaptic cell are highly varied. They vary according to the type, quantity, and frequency of neurotransmitter release, the specific receptor involved, the type of cell that is receiving the neurotransmitter signal, among other things. For example, a neurotransmitter called glutamate typically causes activation of the postsynaptic cell, while a neurotransmitter called GABA typically inhibits postsynaptic cells. Likewise, if the postsynaptic cell belongs to a gland, then activity in that cell may promote secretion, while inhibition may hinder secretion. If the postsynaptic cell is a muscle fiber, then activation triggers muscle contraction, while inhibition causes relaxation.
A synapse is a connection which allows for the transmission of nerve impulses. Synapses can be found at the points where nerve cells meet other nerve cells, and where nerve cells interface with glandular and muscular cells. In all cases, this connection allows for the one-way movement of data. The human body contains trillions of synapses, and at any given time, huge numbers of these connections are active.
How do Presynaptic neurons release neurotransmitters?
They don't, the neurotransmitters stay on either side of the synapse. Neurotransmitters are released when the synaptic vesicles fuse with the presynaptic neuron's membrane, so as to release them into the synaptic cleft.
What relays information for muscles?
Sensory neurons carry signals from the receptors in our body (e.g. thermal, pressure etc.) to the relay neurons, which are found in our spinal cord. Relay neurons then send signals along the spinal cord to the brain. The brain then processes the information and sends a signal back down the spinal cord, through the relay neurons. Relay neurons then sends signals to motor neurons, which will then affect the muscles' movements. Read more: What_does_neuron_cells_do
Which membrane potential results in depolarization without a nerve impulse being generated?
excitatory postsynaptic potential
