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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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: -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-2: -Endocrine glands release hormones into the bloodstream. This lets the hormones travel to cells in other parts of the body.
Detailed explanation-3: -Some hormones bind to receptors on the surface of target cells. Others enter the cells and bind to receptors in the cytoplasm or nucleus. The binding triggers a series of actions that change the physiologic behavior of the cell.
Detailed explanation-4: -Action Hormones are carried by the blood throughout the entire body, yet they affect only certain cells. The specific cells that respond to a given hormone have receptor sites for that hormone. This is sort of a lock-and-key mechanism. If the key fits the lock, then the door will open.