Dictionary » P » Phasic

Phasic

phasic --> adaptation

1. (Science: cell biology) The adjustment of an organism to its environment or the process by which it enhances such fitness.

2. (Science: ophthalmology) The normal ability of the eye to adjust itself to variations in the intensity of light, the adjustment to such variations.

3. (Science: neurology, physiology) The decline in the frequency of firing of a neuron, particularly of a receptor, under conditions of constant stimulation.

4. (Science: dentistry) (a) the proper fitting of a denture, (b) the degree of proximity and interlocking of restorative material to a tooth preparation, (c) the exact adjustment of bands to teeth.

5. (Science: microbiology) The adjustment of bacterial physiology to a new environment.

Origin: L. Adaptare = to fit


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neuro questions!

The answer is phasic receptor for number 2. I agree with A on number 1. The reason for number 2 is simply that it uses a system like binary code of either the stimulus is there or not there. Aka either 1 (there) or 0 (not there). ...

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by daniel.kurz
Mon Nov 21, 2011 7:09 pm
 
Forum: Physiology
Topic: neuro questions!
Replies: 2
Views: 3899

neuro questions!

... at a given time c) voltage and/or current across the membrane of a cell d) multi-unit activity My guess: c. Sensory adaptation: a) only occurs at phasic receptors b) only occurs at tonic receptors c) is due to a change in the quantitative way that a receptor encodes stimuli d) is independent of ...

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by yj90
Wed Jan 19, 2011 4:37 am
 
Forum: Physiology
Topic: neuro questions!
Replies: 2
Views: 3899

Body Electrical Pulse

... anyone know the 'type' of electrical 'pulse' which our bodies use, i was looking at tense units and noticed they this pulse type - asymmetric bi-phasic square waves I just wondered if thats the same pulse type which run our bodies, thanks for any help on this.

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by Avaster
Sat Jun 19, 2010 8:45 am
 
Forum: Human Biology
Topic: Body Electrical Pulse
Replies: 1
Views: 1448

Confusiosomes

... 2-armed units should also be called as chromosomes as cells have chromosomes . So there doesn't seem single definition of chromosomes . The metaphasic chromosomes are 4 armed and ana and telo and inter phasic chromosomes are 2 armed !!! Probably , i've misconceptions here. soplease turn my confusiosomes ...

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by 2810712
Tue Apr 19, 2005 5:40 am
 
Forum: Cell Biology
Topic: Confusiosomes
Replies: 3
Views: 2536


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