Textbook Question
Compare and contrast the following pairs of terms:
Endocrine gland and exocrine gland
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4. Tissues & Histology
Glandular Epithelial Tissue
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Which of the following is true about the mode of secretion of exocrine glands?
A
Holocrine glands secrete their products by pinching off a portion of the cell.
B
Endocrine glands secrete their products directly into ducts.
C
Merocrine glands secrete their products by exocytosis without losing cellular material.
D
Apocrine glands release their products by rupturing the entire cell.
Verified step by step guidance1
Understand the different modes of secretion for exocrine glands: merocrine, apocrine, and holocrine.
Merocrine glands secrete their products by exocytosis, which involves vesicles fusing with the plasma membrane to release their contents without losing any part of the cell.
Apocrine glands secrete their products by pinching off a portion of the cell, which means a part of the cell's cytoplasm is lost during secretion.
Holocrine glands release their products by rupturing the entire cell, which means the whole cell disintegrates to release its contents.
Endocrine glands are not exocrine glands; they release their products (hormones) directly into the bloodstream, not into ducts.
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