Textbook Question
Certain types of cancerous lung tumors can secrete hormones normally made by the pancreas, adrenal gland, and hypothalamus. What prevents such secretion from happening in healthy cells?
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4. Tissues & Histology
Glandular Epithelial Tissue
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Which of the following is not an example of an exocrine gland?
A
Pancreas
B
Sweat gland
C
Thyroid gland
D
Salivary gland
Verified step by step guidance1
Understand the definition of exocrine glands: Exocrine glands are glands that secrete their products into ducts that lead directly to the target site. These products can include enzymes, sweat, saliva, etc.
Identify the function of the pancreas: The pancreas has both endocrine and exocrine functions. Its exocrine function involves secreting digestive enzymes into the small intestine via ducts.
Identify the function of sweat glands: Sweat glands are exocrine glands that secrete sweat onto the skin surface through ducts.
Identify the function of salivary glands: Salivary glands are exocrine glands that secrete saliva into the mouth through ducts.
Identify the function of the thyroid gland: The thyroid gland is an endocrine gland, not an exocrine gland, because it releases hormones directly into the bloodstream without using ducts.
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