MEDICINE MCQ
ENDOCRINOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Synthesized and stored within the cell in the form of secretory granules and are cleaved as needed
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Peptides and Proteins
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Amines
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Steroids
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None of the above
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Explanation:
Detailed explanation-1: -Merocrine secretion is the most common type of exocrine secretion. The secretions are enclosed in vesicles that move to the apical surface of the cell where the contents are released by exocytosis. For example, saliva containing the glycoprotein mucin is a merocrine secretion.
Detailed explanation-2: -Insulin is synthesized as proinsulin in the endoplasmic reticulum (ER) and transported to the Golgi apparatus. In the trans-Golgi network (TGN), insulin becomes hexamer, and then packaged into secretory granules (Figure 1). In secretory granules, proinsulin is processed to form mature insulin and C-peptide.
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