PATHOLOGY MCQ
ENDOCRINE SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a chemical substance produced by a gland and carried by the lymph.
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an enzyme produced by a gland and carried by the blood.
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a chemical substance produced by an organ and carried by the blood.
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a chemical substance produced by a gland and carried by the blood.
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Detailed explanation-1: -Endocrine glands secrete hormones straight into the bloodstream. Hormones help to control many body functions, such as growth, repair and reproduction. The endocrine system involves many organ systems and hormones, many of which are still being investigated and understood.
Detailed explanation-2: -Hormones act as chemical messengers that are released into the blood stream to act on an organ in another part of the body.
Detailed explanation-3: -Though few hormones circulate dissolved in the blood-stream, most are carried in the blood, bound to plasma proteins. For example, steroid hormones which are highly hydrophobic, are transported bound to plasma proteins.
Detailed explanation-4: -A hormone was thus defined as a compound that is produced in a secretory tissue and transported in the blood circulatory system to target tissues, where they induce functional changes.