Celula si tesuturi Flashcards

1
Q

Ce dimensiune are hematia?

A

7,5 microni

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2
Q

Ce dimensiuni are ovulul?

A

150-200 microni

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3
Q

Ce dimensiuni are fibra musculara striata?

A

5-15 cm

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4
Q

Care e dimensiunea medie a celulelor?

A

20-30 microni

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5
Q

Ce dimensiuni are ribozomul?

A

150-250 A

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6
Q

Ce dimensiuni are nucleul?

A

3-20 microni, 1/3 sau 1/4 din citoplasma

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7
Q

Care e potentialul de repaus?

A

intre -85 si -65 mV

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8
Q

Care e pragul?

A

-65 mV

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9
Q

La ce valoare se inchid canalele de Na?

A

+40 mV

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10
Q

Cat dureaza PA la neuron?

A

~5 ms

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11
Q

Cat dureaza PA la fibra musculara cardiaca ventriculara?

A

~200 ms

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12
Q

Cat dureaza PA in antrul piloric?

A

~5 ms

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13
Q

In ce cantitate se gaseste substanta fundamentala in tesutul osos? Dar fibrele de colagen?

A

5-10% si 90-95%

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