BIOLOGICAL BASES OF BEHAVIOR
THE NERVOUS AND ENDOCRINE SYSTEMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Hormones are synthesized and secreted by specific cells
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Hormones are transported by blood from site of secretion to target cell
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Hormones cause a response which can be detected by receptor cells
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Hormones function at high concentration
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Detailed explanation-1: -A hormone is a regulatory chemical that is secreted into the blood by an endocrine gland or an organ of the body exhibiting an endocrine function. The blood carries the hormone to every cell in the body, but only the target cells for a given hormone can respond to it.
Detailed explanation-2: -Hormones travel throughout the body, either in the blood stream or in the fluid around cells, looking for target cells. Once hormones find a target cell, they bind with specific protein receptors inside or on the surface of the cell and specifically change the cell’s activities.
Detailed explanation-3: -Endocrine hormone are secreted into the blood and carried by blood and tissue fluids to the cells they act upon, while exocrine hormones are secreted into a duct, and then into the bloodstream. Exocrine hormones are transferred from cell to cell by diffusion (paracrine signaling).
Detailed explanation-4: -Hormones synthesized by the endocrine glands are transported throughout the body by the bloodstream.
Detailed explanation-5: -The true statement about hormones is: b. Hormones interact with receptor sites at target cells. Hormones are made and secreted by endocrine glands into the bloodstream where they will travel to their target cells.