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Conduction

Conduction

(Science: physics, physiology) The transfer of sound waves, heat, nervous impulses or electricity.

Origin: L. Conductio The transmission of heat or electricity or sound.The availability of electricity being able to pass through a given substance.


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Re: [NEUROSCIENCE]-Two Questions about AP Propagation

I think the second question is referring to thicker axons having nodes of Ranvier and thus can perform saltatory conduction. This would decrease the need for Na+ channels. The answer to the first question sounds pretty reasonable.

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by hymenoptera7
Sun Aug 05, 2012 5:19 am
 
Forum: Human Biology
Topic: [NEUROSCIENCE]-Two Questions about AP Propagation
Replies: 5
Views: 5001

Re: The Heart

Except for decreasing the heart rate and the force of contraction, PNS also reduces the conduction velocity of cardiac muscle fibers. Parasympathetic stimulation can also result in increased activity by glands that control bronchial secretions.

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by Dino77
Wed Aug 17, 2011 6:55 am
 
Forum: Human Biology
Topic: The Heart
Replies: 6
Views: 9652

Re: Why do carrots spark in the microwave?

... The "defrost" option on a microwave oven relies on intermittent heating of a small amount of liquid water present on the food, and heat conduction from these areas into frozen material. By putting frozen material into the microwave oven with continuous energy input, no time is given ...

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by sara135
Thu Jul 14, 2011 10:12 am
 
Forum: Microbiology
Topic: Why do carrots spark in the microwave?
Replies: 7
Views: 28276

Help with the Heart!!

... of: veins, capillaries, venules, arteries, or the coronary sinus? 3) The myocardium does not contain which of the following: intercalated discs, conduction (Purkinje) fibers, sarcomeres, visceral pericardium, trabeculae carne I am pulling my hair out with these three. I will try to get the multiple ...

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by amanderkinz
Mon Feb 28, 2011 3:04 am
 
Forum: Physiology
Topic: Help with the Heart!!
Replies: 2
Views: 4145

Myelinated neuron

The gates are concentrated at the nodes of ranvier. it's called saltatory conduction. here: http://en.wikipedia.org/wiki/Saltatory_conduction

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by plasmodesmata11
Tue May 25, 2010 1:48 am
 
Forum: Human Biology
Topic: Myelinated neuron
Replies: 1
Views: 1781
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