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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

List and define the three types of synapses?

chemical synapse operation at the transmitter

Electrical Ionic Flow. At the synapse the following things happen Divergence and synaptic neuron

Describe the equilibrium potential of an element?

Is a condition in which the concentration of a substance is equal throughout a space.

What nerves connect directly to the brain?

most, if not all, nerves connect to the spinal cord, which is an extremely large nerve that conncts to the brain.

Why do nerves form a network all over the body?

Nerves are the things that carries information from the body to the brain (is it hot, cold, windy, is anything hurting, is the arm bent or straight etc etc) and commands from the brain to the body. (move that leg, breathe, look left etc)

If nerves didn't reach the whole body there'd be parts of it we couldn't control and wouldn't know what was happening to it.

Helmholtz's experiment with the frog's nerve indicated that the speed of the nervous impulse was?

Conduction velocities are specific to each person and depend largely on an axon's diameter and the degree to which that axon is myelinated. Some myelinated neurons conducting at speeds up to 120 m/s (432 km/h).

Is soft focus a technical term or descriptive term?

I say it could be used either way. Years ago, they actually made "soft focus" lenses for portraiture. Imagine, a lens with a "defect" built in on purpose! These days, people used various types of filters to replicate the effect. Therein lies the technical use of the term.

If one describes an image taken in this fashion, I suggest it becomes descriptive in nature.

What is the difference between motor nerve and sensory nerve and association or connector nerves?

  • Motor neurons move signals from the central nervous system to a central organ or point, which in this case are muscle and gland cells. This signal makes the cells contract and allow for physical movement (locomotion and other movements such as from the face or the neck). Motor nerves contain axons of somatic and branchial motoneurons. Sensory neurons move signals from the central organ or point to the central nervous system. They receive sensory stimuli and sends the information to the CNS in order to experience how something feels and if it is painful, smooth, rough etc. They are made of sensory fibers: mechanoreceptors fibers that sense body movement and pressure placed against the body and nociceptor fibers that sense tissue injury.
  • Association Nerves are neurons found in the brain and spinal cord that conduct impulses between neurons such as from afferent to efferent neurons. Called also interneurons. Connector Nerves process information that is being sent between the body, brain and spinal cord. The connector neuron

The amount of neurotransmitter released at a synapse is controlled by?

The amount of calcium ions which come into the axon terminal after an action potential arrives, which depends in part upon the concentration of calcium ions inside and outside the neuron, and also upon the amplitude and shape of the arriving action potential (short duration AP spend less time above the Ca ion gate activation threshold, resulting in fewer gates being opened, therefore less Ca allowed in).

What is the technical term for a nudist colony?

The proper terms these days are :

Naturist Resort

Naturist Club (either one that is located somewhere or that has meetings in different special locations).

Naturist Beach

Naturist Park (Nudist still is used but the other term is more accepted now.) Some countries even have Naturist Cities. (Just dont call it The Naked City or you'll see some frowns!)

How is a synaptic transmission terminated?

Synaptic transmission is terminated primarily through the reuptake of neurotransmitters by the presynaptic neuron, where they are repackaged into vesicles or broken down by enzymes. Additionally, neurotransmitters can be degraded by specific enzymes in the synaptic cleft, such as acetylcholinesterase for acetylcholine. Another mechanism involves the diffusion of neurotransmitters away from the synaptic cleft, reducing their concentration and effect on the postsynaptic receptors. Collectively, these processes ensure that the signal is brief and precisely regulated.

How does the nerve pathway go for s1 nerve?

The nerve pathway travels down from the s1 spine. If the nerve root at the s1 is impinged or herniated, symptoms of sciatica can appear.

What are the functions of the neurons?

the function of neurons is to receive information, process it, and pass it on to other neurons, or muscles or endocrine/exocrine glands. I realize 'receive information, process it, and pass it on' is a giant and amorphous description, but the description of the behavior of organisms with neurons is also giant and amorphous.

Where does an action potential start?

Action potentials are generated on a part of the neuron called the 'axon hillock' - the proximal most portion of the axon.

How do you disable your nerve system without killing or paralyzing yourself?

Once you're close friends with a fire bender, earth bender, water bender, or air bender, and you can't bend, you'll figure out a way to do non bending things, like locating people's pressure points and hitting them to disable their nerves. Hope this helps.

Can you accelerate brain waves externally using an amplifier and send it back to the brain to get faster reflex and some more power to the sensory organs?

The short answer is no.

reason being the speed of transmission has more to do with the medium(the thing it travels through) then the actual wave signal itself, so unless they found a way to completely reconstruct your nervous system with a different material it's pretty much impossible.

regardless, the speed at which the signals travel are already faster than you think.

most of the time spent in your reflex actions is at the brain or muscle level, so what you are asking for really isn't an amplifier for brain waves to travel faster, but rather an amplifier that allows your muscles to move faster.

Even if something like that is invented, there'd be a limit to how much speed you could gain as well.

For example, maybe it'd be possible for you to be as strong as a bear, pound for pound, you'd never be literally as strong as a bear in your current body size. in fact, if you were to possess such great strength with your current muscles, you'd rip your own arm off every time you swing it with full strength.

When someone starts hitting on my nerves and provoke me i start shouting and screaming and crying nonstop for hours with short breath and i lose control of myself what's the cause or what's this phenomena?

Severe anxiety, stimulated by external factors and the strong emotions you were feeling fueled your anger, and probably caused such reaction. No expert on the matter, but sometimes being aware of your reactions and acknowledging their causes and outcomes may help you gain control over it if it reoccurs. Taking heavy breaths upon realizing it and staying hydrated can help aswell.

Also hey, can we talk ?