Which one of the following secretes hormones in the human body?
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Plasma cells
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Endocrine glands
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Salivary glands
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Prostrate glands
B
Correct answer
Explanation
Endocrine glands secrete hormones directly into the bloodstream to regulate body functions. Plasma cells produce antibodies, salivary glands produce saliva (exocrine), and prostate glands produce fluid for semen (exocrine). Only endocrine glands are primarily defined by hormone secretion.