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Physiology Nervous System cd47d1ba

Which of the following ion plays a role in exocytosis?

A
Sodium
B
Potassium
C
Calcium
D
Magnesium
High-Yield Explanation
Ans. C CalciumRef: Ganong 25th edition, P 46* Exocytosis is a calcium dependent process where vesicles containing material for export are targeted to the cell membrane.* This area of fusion then breaks down leaving the contents of vesicle outside the cell membrane intact.* The reverse of exocytosis is called as endocytosis and is mediated by the protein Clathrin.

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