Pathology & Pathophysiology at Misr International University | Flashcards & Summaries

Lernmaterialien für Pathology & pathophysiology an der Misr International University

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How to measure the RMP?
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- it's measured by two microelectrodes
- One is applied to the outer surface of the nerve fiber, the other inside the nerve fiber.
- Both electrodes are connected to voltmeter
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The selective permeability of cell membranes is less permeable to ....
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K+ ions
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RMP of large nerve fibers
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-90 mV
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What are the functioning cells of the nervous system?
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Neurons
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...... or .... of the peripheral nerves transmit information to the CNS, whereas ..... or ..... carry information away from CNS.
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Afferent or motor neurons / Efferent or sensory neurons 
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What are the causes of the RMP?
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It is due to unequal distribution of ions on both sides of the cell membrane.

On the outer surface
  • Sodium Na+ is the main cation
  • HCO3- & Cl- are the main anions

Inside the cell
  • Potassium K+ is the main cation
  • Intracellular proteins are the main anions


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TESTE DEIN WISSEN
What is the cause of the unequal distribution of ions in the RMP?
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Is produced as a result of two main factors:
A. Selective permeability of cell membranes. النفاذية الانتقائية لأغشية الخلايا
B. Na+ / K+ pump
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The selective permeability of cell membranes is  impermeable to ....
Lösung anzeigen
TESTE DEIN WISSEN
K+ ions
Lösung ausblenden
TESTE DEIN WISSEN
Why is the selective permeability of cell membranes is freely permeable to HCO³- & Cl- ions?
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Due to their small size
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Why is the selective permeability of cell membranes is impermeable to intracellular proteins?
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Due to their large size
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The cell membranes are semi-permeable membranes containing several ion channels.
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True
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The selective permeability of cell membranes is highly permeable to ....
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K+ ions
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  • 645 Karteikarten
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Beispielhafte Karteikarten für deinen Pathology & pathophysiology Kurs an der Misr International University - von Kommilitonen auf StudySmarter erstellt!

Q:
How to measure the RMP?
A:
- it's measured by two microelectrodes
- One is applied to the outer surface of the nerve fiber, the other inside the nerve fiber.
- Both electrodes are connected to voltmeter
Q:
The selective permeability of cell membranes is less permeable to ....
A:
K+ ions
Q:
RMP of large nerve fibers
A:
-90 mV
Q:
What are the functioning cells of the nervous system?
A:
Neurons
Q:
...... or .... of the peripheral nerves transmit information to the CNS, whereas ..... or ..... carry information away from CNS.
A:
Afferent or motor neurons / Efferent or sensory neurons 
Mehr Karteikarten anzeigen
Q:
What are the causes of the RMP?
A:
It is due to unequal distribution of ions on both sides of the cell membrane.

On the outer surface
  • Sodium Na+ is the main cation
  • HCO3- & Cl- are the main anions

Inside the cell
  • Potassium K+ is the main cation
  • Intracellular proteins are the main anions


Q:
What is the cause of the unequal distribution of ions in the RMP?
A:
Is produced as a result of two main factors:
A. Selective permeability of cell membranes. النفاذية الانتقائية لأغشية الخلايا
B. Na+ / K+ pump
Q:
The selective permeability of cell membranes is  impermeable to ....
A:
K+ ions
Q:
Why is the selective permeability of cell membranes is freely permeable to HCO³- & Cl- ions?
A:
Due to their small size
Q:
Why is the selective permeability of cell membranes is impermeable to intracellular proteins?
A:
Due to their large size
Q:
The cell membranes are semi-permeable membranes containing several ion channels.
A:
True
Q:
The selective permeability of cell membranes is highly permeable to ....
A:
K+ ions
Pathology & pathophysiology

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