CONNECTIVE TISSUE GLAND
ENDOCRINE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They give it a genetic code
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They fit into it like a key into a lock
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They Press a button on the cell
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They send it a text message
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Detailed explanation-1: -How hormones work. A hormone will only act on a part of the body if it ‘fits’. A hormone can be thought of as a key, and its target site (such as an organ) has specially shaped locks on the cell walls. If the hormone fits the cell wall, then it will work.
Detailed explanation-2: -Hormones are recognised by their target receptors in a “lock and key” system. Each hormone (key) fits exactly into its receptor (lock). Only those parts of the body that have the receptor (lock) can respond to the hormone (key). This is why hormones affect some parts of the body, but have no effect on others.
Detailed explanation-3: -The glands that make up the endocrine system produce chemical messengers called hormones that travel through the blood to other parts of the body.