PATHOLOGY MCQ
ENDOCRINE SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is NOT a characteristic of hormones?
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Transported in blood flow
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Produces slow and prolonged response
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The duration of effect is short
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Only affect specific target cells
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Explanation:
Detailed explanation-1: -Peptide hormones are soluble in plasma, act via surface receptors, are fast-acting and short-lived. Thyroid hormones and steroid hormones are insoluble in plasma, act via intracellular receptors to change transcription, are slow-acting and are long-lived.
Detailed explanation-2: -A hormone’s half-life and duration of activity are limited and vary from hormone to hormone. For instance, the biological half-life of luteinizing hormone is 20 minutes, which is shorter than that of a follicle-stimulating hormone (three to four hours), and of human chorionic gonadotropin (24 hours).
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