CONNECTIVE TISSUE GLAND
ENDOCRINE
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Blood Stream
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Ducts
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Secretory Vessicles
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Goblet Cells
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Detailed explanation-1: -Circulation: How Hormones Reach and Target Particular Cells. Endocrine glands secrete hormones directly into the bloodstream. The hormones dissolve in plasma and travel the circulatory pathways through various body tissues.
Detailed explanation-2: -The glands of the endocrine system secrete hormones directly into the extracellular environment. The hormones then diffuse to the bloodstream via capillaries and are transported to the target cells through the circulatory system.
Detailed explanation-3: -Hormones influence gene expression by binding DNA in a cell’s nucleus. That is, hormones turn on certain genes that are preprogrammed to make specific proteins. These proteins cause a cell to respond in a new way (grow, secrete, metabolize, etc.).
Detailed explanation-4: -A target cell responds to a hormone because it bears receptors for the hormone. In other words, a particular cell is a target cell for a hormone if it contains functional receptors for that hormone, and cells which do not have such a receptor cannot be influenced directly by that hormone.
Detailed explanation-5: -The endocrine glands release hormones into the bloodstream that transports it to reach the target cell, tissue or organ.