How many non steroid hormones what are

hormones are the messenger molecules of the endocrine system and doctrine hormones travel throughout the body in the blood however it hormone affects only certain cells called target cells a target cell is the type of a cell on which hormone as an effect a target cell is affected by a particular hormone because it has receptor proteins that are specific to that hormone . A hormone travels through the bloodstream until it finds at target cell with the matching receptor it can be into when the hormone binds to receptor it causes a change within the cell exactly how this works depends on what whether the hormone is a steroid hormone or non steroid hormone

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