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Nerve

nerve

1. (Science: anatomy) One of the whitish and elastic bundles of fibres, with the accompanying tissues, which transmit nervous impulses between nerve centers and various parts of the animal body.

An ordinary nerve is made up of several bundles of nerve fibres, each bundle inclosed in a special sheath (the perineurium) and all bound together in a connective tissue sheath and framework (the epineurium) containing blood vessels and lymphatics.

2. A sinew or a tendon.

3. Physical force or steadiness; muscular power and control; constitutional vigor. he led me on to mightiest deeds, Above the nerve of mortal arm. (milton)

4. Steadiness and firmness of mind; self-command in personal danger, or under suffering; unshaken courage and endurance; coolness; pluck; resolution.

5. Audacity; assurance.

6. (Science: botany) One of the principal fibrovascular bundles or ribs of a leaf, especially when these extend straight from the base or the midrib of the leaf.

7. (Science: zoology) One of the nervures, or veins, in the wings of insects.

(Science: anatomy) nerve cell, the operation of stretching a nerve in order to [[remedy 555 ]] diseases such as tetanus, which are supposed to be influenced by the condition of the nerve or its connections.

Origin: OE. Nerfe, F. Nerf, L. Nervus, akin to Gr. Sinew, nerve; cf. String, bowstring; perh. Akin to E. Needle. Cf. Neuralgia. The courage to carry on; he kept fighting on pure spunk; you haven't got the heart for baseball.


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Hypothetical question about vampires

... just accelerated tooth growth, and this forces the vampire to file down his teeth himself. They sharpen them either because they want to avoid the nerve endings deep within the tooth, or because it's convenient for blood sucking, or both.

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by wildfunguy
Wed Jul 30, 2014 7:53 pm
 
Forum: General Discussion
Topic: Hypothetical question about vampires
Replies: 1
Views: 421

Nerve Cell Represented By Electrical Circuit

Hey guys, I'm new here! Just looking at the Fitzhugh-Nagumo model of the nerve cell as a electrical circuit and wondered if you knew what all the circuit elements represent? Particularly the diode. Any help would be much appreciated! Thanks

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by Nanderson
Wed Apr 09, 2014 6:22 pm
 
Forum: Cell Biology
Topic: Nerve Cell Represented By Electrical Circuit
Replies: 0
Views: 398

Does other animals have faster nerve speeds?

The speed of nerve transmission depends on the size of the nerve axon, the length of it and whether it is effectively insulated by myelin. There are a vast number of different kinds of neurons in each animal, and for some there ...

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by Babybel56
Fri Feb 28, 2014 8:55 am
 
Forum: General Discussion
Topic: Does other animals have faster nerve speeds?
Replies: 1
Views: 1273

Does other animals have faster nerve speeds?

i was thinking, though animals do not have a long chain of thought (ie, stimulus -> brain ->memory -> action); would they have faster nerves speeds or brain speeds, if they had faster brains with low capacity; and if fast enough (relativity) then would they hear sound in a lower frequency? ...

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by 1832vin
Wed Feb 05, 2014 9:39 pm
 
Forum: General Discussion
Topic: Does other animals have faster nerve speeds?
Replies: 1
Views: 1273

Action potentials of an earthworm going negative first

... called audacity to record the action potentials. A bit more information on the earthworm if it at all influences this is that they have 3 main nerve cords where all the nerves bundles are held, 2 of them carrying the signals down the worm and the other transmitting them to the front. Thanks ...

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by IsDolan
Mon Jan 20, 2014 3:28 am
 
Forum: General Discussion
Topic: Action potentials of an earthworm going negative first
Replies: 2
Views: 835
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