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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

Can the testicles repair themselves?

It depends on the damage done. The typical damage that comes from a simple kick in the nuts will usually heal on its own in a couple of days. More intense damage, like testicular bruising from repeated trauma, will also usually take care of itself over time, though some functionality of the testicle may be lost and the man will not be as fertile afterwards. Severe damage, though, like a testicular rupture (a popped ball), needs to be brought to a doctor immediately. A nut can't really heal itself if it's been mashed into peanut butter.

What affect does elevated extracellular chloride have on the resting membrane potential of a neuron?

Not much. Changing the extracellular chloride changes the level inside the cell so they will be in equilibrium again. The chloride ion plays little role in resting potential.

What part of the eye receives the image and is connected to the brain by the optic nerve?

The retina is the part of the eye that receives the image, containing photoreceptor cells that detect light. The optic nerve transmits visual information from the retina to the brain for processing.

Describe the functions of the contacts on the top of the capacitor?

If there are only two contacts they are there to allow the capacitor to be connected into a circuit. If this is not a "just for fun" nonsense question, please describe the actual capacitor clearly and it may then be possible to give an answer. Please state: * the capacitance value (it is usually printed on the body of the capacitor) * the working voltage (if it is printed on the body of the capacitor) * the type of body (metal, plastic, etc) * the maker's name (if you know it - it may be shown on the body) * exactly how many contacts there are and where each contact is positioned

How do you treat a stricture of the left ureter?

I do not believe this question can be answered without much more information. Has the tube actually narrowed, or is there an obstruction like a kidney stone? How do you know this is the problem, and what have you been told? What are the symptoms? Is there anything unusual about your diet? Had any drugs, surgeries, or major injuries?

There are tonics to improve the function of the bladder and kidneys, but it is unwise to ignore any potential underlying problems. For now, I suggest drinking lots of lemonade and cranberry juice. You might want to try some licorice extract, which can be found at a health food store. I do not want to say anymore before I have more information. Stay away from calcium for now.

Ureter, the etwa 25-30 cm long tube (in adults), arises from the renal pelvis, from which peristaltic waves force the urine into it. There are two ureters, as each kidney has its own tube. These two ureters convey urine from the kidneys to the bladder. Their diameter are relatively small, about 3 mm. Occationally, stone(s) form in the renal pelvis, and depending on the size, it might stack in the ureter, blocking urine's flow, and causing pain. If the stone is able to pass (by peristalsis), the pain of it stretching the ureter's wall, still could be felt. More info could be found on http://en.wikipedia.org/wiki/Kidney http://en.wikipedia.org/wiki/Ureter

Neurotransmitters categorized as inhibitory are expected to?

Inhibitory neurotransmitters prevent the firing of neurons by binding with certain receptors, causing the influx of chloride ions to hyperpolarize the neuron. When this happens, it requires a much larger excitatory signal to override the inhibitory effects in order to allow the neuron to fire.

What are the detailed descriptions of all parts of a neuron?

I know your in Mr.Stevens class stop cheating and get a life

D-Vick Was Here

The x cranial nerve is the nerve?

The x cranial nerve is the vagus nerve. It is responsible for regulating vital functions in the body such as heart rate, digestion, and respiratory rate. It also plays a role in the communication between the brain and various organs in the body.

What is cost of carotid Doppler test?

It would depend on where you live and the facility performing the test. Complete exam charges to insurance average about $800-$1200 with the facility payment range about $180-$400. These numbers are from the Pittsburgh Pa region. Screening or limited exams not billed to insurance would range from $35-$95. You can always call your local hospital and they will tell you their charges. Also let them know if you are unable to afford a procedure and they may help you. good luck.

How many neurons does the human brain have per square inch?

"100 billion", that's how many neurons there are totally in the human brain, I am interested if I "cut" a part of the human brain that was a cubic inch how many neurons would be in there?

Is there another name for the servo motor on a 1999 Oldsmobile Intrigue?

"Thing-a-ma-jig". Actually, I don't know of any other servos but the two for the climate control. An old-timer may call them "dash pots".

What is the function of the nucleus in a neuron?

The nucleus in a neuron contains the cell's genetic material and controls the cell's activities by regulating gene expression. It is responsible for producing the proteins necessary for the neuron's structure and function.

What affect does increased calcium have on the resting membrane potential of a neuron?

The opposite of decreasing the level of calcium. It will be harder for the neuron to respond to a stimuli. It can have a negative effect on the heart rate and can mimic a heart attack. There is a mnemonic for remembering the effects of hypercalcaemia: "Stones, Bones, Groans, Thrones and Psychiatric Overtones".

So it can affect all of these:

Stones (renal or biliary)

Bones (bone pain)

Groans (abdominal pain, nausea and vomiting)

Thrones (Osborn wave on ECG)

Psychiatric overtones (Depression 30-40%, anxiety, cognitive dysfunction, insomnia, coma)

What is the role of sensory neurons in the breakdown of food?

Beyond being involved in the taste of food, sensory neurons do not have much of a role in breaking down food. The teeth do the grinding and the stomach is where most of the mixing takes place.

How do you swap the motor of a 1990 Geo Storm GSI to a 1990 Isuzu Impulse motor?

You just need the engine. everything else should plug in since your GSI already has a 4XE1 1.6 DOHC engine. Finding an Impulse RS engine (4XE1WT) and wiring harness and swapping that in would be the best option for power... however they are getting harder to find. You should also look into swapping in the 1.8 engine 4XF1 from a later year 1992-1993 Storm or 1993 Asuna Sunfire (in Canada) and 1992 Stylus RS which produced more torque and horsepower then the 1.6.

How fast do neural impulses travel?

It really depends. Some neural impulses can travel as slow as 2 mph or at a speed of 200 or more mph. Even at this speed it's 3 million times slower than the speed of electricity through a wire

What is a central vacuum system?

The main vacuum unit is usually located in the basement with tubes running throughout the house. The tubes run to each room and have a hinged cover. You insert the hose in the tube and the vacuum unit automatically turns on and you can suck up the dust. All you have to move is the hose and not the main suction unit.

What happens to the net concentration of sodium ions during the resting membrane potential?

During the resting membrane potential, the net concentration of sodium ions remains constant. The Na+/K+ pump works to actively transport sodium out of the cell and potassium into the cell, maintaining the resting membrane potential.