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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.

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What are the functions of afferent and efferent nerves?

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Asked by Wiki User

Afferent nerves carry sensory information from the body to the brain, allowing us to sense touch, temperature, pain, and other stimuli. Efferent nerves, on the other hand, transmit signals from the brain to the muscles and glands, enabling movement and physical responses.

What is the word for inflammation of a nerve?

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Asked by Wiki User

The term for inflammation of a nerve is neuritis.

What is the difference between nerve and neurology?

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Asked by Wiki User

various medical specialties, cardiology, and neurology, concentrate on various organ systems within the body.

The area of medicine known as cardiology focuses on the examination and management of the heart and circulatory system. Cardiologists identify and treat ailments such as vascular problems, arrhythmias, heart failure, and heart disease. To diagnose and treat cardiovascular problems, they frequently do tests such as cardiac catheterizations, angiograms, and echocardiograms.

The medical specialty that treats disorders of the nervous system, which includes the brain, spinal cord, and peripheral nerves, is called neurology. Neurologists identify and manage disorders like multiple sclerosis, epilepsy, strokes, and neurodegenerative illnesses like Parkinson's and Alzheimer's. They use a variety of diagnostic techniques, such as neurological exams and imaging tests like CT and MRI scans.

Although internal medicine as a whole encompasses both cardiology and neurology, their respective specializations and emphasis on various organ systems mean that they deal with different health issues. Whereas neurologists focus on conditions affecting the neurological system, cardiologists mostly address problems with the heart and blood arteries. In situations where neurological and cardiovascular disorders overlap or have an impact on one another, coordination across these professions is essential.

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Are neurons are able to divide?

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Asked by Wiki User

No, you're thinking of Neuroglia

What takes place in the synapse?

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Chemical synapses are specialized junctions through which neurons signal to each other and to non-neuronal cells such as those in muscles or glands. Chemical synapses allow neurons to form interconnected circuits within the central nervous system. They are thus crucial to the biological computations that underlie perception and thought. They provide the means through which the nervous system connects to and controls the other systems of the body, for example the specialized synapse between a motor neuron and a muscle cell is called a neuromuscular junction. The adult human brain has been estimated to contain from 1014 to 5 × 1014 (100-500 trillion) synapses.[citation needed] The word "synapse" comes from "synaptein", which Sir Charles Scott Sherrington and colleagues coined from the Greek "syn-" ("together") and "haptein" ("to clasp"). Chemical synapses are not the only type of biological synapse: electrical and immunological synapses exist as well. Without a qualifier, however, "synapse" commonly refers to a chemical synapse. Wikipedia

What are motor neurons?

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Asked by Wiki User

Motor neurons are neurons which carry impulses from the Central Nervous System to muscles or glands. When an action potential is conducted by a motor neuron a muscle contracts or a product is released from a gland.

Does the second cranial nerve transmit nerve impulses from the retina to the brain?

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The second cranial nerve is the optic nerve, which tells the brain what the eye is seeing

What is the high-speed signals that pass along the axons of nerve cells called?

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The high-speed signals that pass along the axon are called action potentials. They spread in a wave of depolarization.

What is olfactory neurons?

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They process and relay sensory input from your nose.

What are chemicals which relay amplify and modulate signals between a neuron and another cell?

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Asked by Wiki User

Neurotransmitters are chemicals that send messages from one cell to another.

Where do the major brain nerves exit?

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Asked by Wiki User

Cranial nerves

What are the differences between preganglionic and postganglionic neurons?

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Asked by Wiki User

You have a really good question. Studying the nervous system can be overwhelming and quit confusing. Preganglionic Neurons come from the CNS to the Ganglion ( mass of neuron cell bodies and dendrites) and Postganglionic neurons leave the ganglion and head toward the effector organ ( smooth muscle, glands, etc..).

List the events that occur in an action potential?

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Asked by Wiki User

In simplest terms, the five stages of action potential are...

A. Action Potential

B. Depolarization

C. Recovery Phase

D. Refractory Period

E. Hyper-polarization

Why is conduction at synapses always one way?

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Asked by Wiki User

We can be thankful that they go in only one direction; otherwise brain activity would be nothing but chaos. Neurotransmission begins at the synapse. At the synapse, only one of the two corresponding neurons has receptor locations that determine whether or not the receiving neuron will fire. The other neuron at the synapse is responsible for producing the neurotransmitters that attach to the receptors. There is sometimes a re-uptake of neurotransmitters when there are no more receptors for them to attach to. Some psychotropic drugs work to inhibit this re-uptake.

Can a nerve fibre and nerve both carry sensory and motor impulses?

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Asked by Wiki User

There are the Mixed Nerves in the spinal column that carry both sensory and motor nerves, but these neurons have 2 different jobs that they do,& I know of no neurons doing both as the impulses travel to 2 different locations which couldn't be done at the same time.

What is the treatment for third nerve palsy?

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Asked by GaleEncyofNeuroDis

Some patients have severe pain and double vision (diplopia), in addition to problems moving their eyes normally. The affected eye tends to move down and out, due to an inequality in muscle functioning. The eye cannot move up, down, or in.

What do dendrites do for the neuron?

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Dendrites receive inputs from other neurons, via synapses.

What are mirror neurons?

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Mirror neurons were first discovered by a group of psychologists and its leader, Giacomo Rizzolatti. They were researching neural activities in macaque monkeys when they came upon the effects of mirror neurons. They discovered that the monkeys' brains released the same neuron when performing an activity but also when observing it, hence the saying, "Monkey see, monkey do." For example, a task involved grabbing food. Their brains released the same neurons while watching the psychologists grab foods. This relationship is due to the effects of mirror neurons.

These neurons naturally allow us to react and imitate our surroundings. Happy people are usually around other happy people. A smile is mirrored by another smile. Feeling someone's pain in a football game even though you are not in the game itself is another example of mirror neuron activities. When children are born, they imitate the actions of others, such as the parents. They develop a schema for when to smile, cross the street, or how to handle food.

Those diagnosed with autism, a social disorder, are an exception. They seem to lack mirror neural activity which explains why they cannot relate with other people. Autistic victims only focus on themselves instead of the actions of others.

Are nerves present skin?

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Asked by Wiki User

The skin has nerves to detect changes in the external environment. The nerves of the skin can detect heat and cold, pressure, pain, and touch.

In which direction does the message travel in the neuron?

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Asked by Wiki User

it travels through the dendrite to the synaptic terminal to the axon

What is the psoas nerve?

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The psoas nerve is the nerve that innervates the psoas major muscle. It is formed by fibers of spinal nerves L2-L4.

What part of the neuron that facilitates synaptic transmission of a signals is called?

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Asked by Wiki User

the part that facilitates the the transmission of signals is collectively known as the axon but more peculiarly known as the nerve endings.