ENDOCRINE ORGANS AND RESPIRATORY SYSTEM
ENDOCRINE ORGANS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which statement best describes the chemical substances secreted by endocrine glands?
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They are secreted in one place and most often act at another
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they are distributed by the nervous system
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They are secreted into specialized ducts for transport.
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They are found only in vertebrates
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Explanation:
Detailed explanation-1: -Which statement best describes the chemical substances secreted by endocrine glands? They are secreted into specialized ducts for transport.
Detailed explanation-2: -Endocrine glands-secrete chemical substances called hormones directly into the bloodstream for transport to target tissues. There are more than 20 steroid hormones in the body, ie. cortisol, cortisone, estrogen, progesterone, testosterone. Steroids are produced by the gonads (sex hormones) and by the adrenal cortex.
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