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13 Cards in this Set
- Front
- Back
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Hormones
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chem communicators; secreted by cells and regulate activity of other cells in body, made by endocrine glands
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endocrine glands
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ductless organs that secrete horms into bloodstream and fluid around cells
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target cells
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specific cells to which a horm travels to produce a specific effect.
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receptors
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on target cells, protein that binds to specific horms that cause cell to respond
each binds to a specific hormone |
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amino-acid based hormones
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dissolvable, binds to receptor proteins on cell memb,(1st messenger) converts ATP to cyclic AMP, which then activates other enzymes/proteins in cell (2nd messenger)
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steroid horms
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lipid horms made from cholesterol, diffuse thru cell memb of their target cells and binds to receptors in cytoplasm/nucleus
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because steroid horms are fat-soluble, they can....
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diffuse through the cell memb of target cells.
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cyclic AMP
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made in response to amino acid-based horms
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a steroid-horm-receptor complex....
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binds to DNA in the nucleus
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how are horms transported through body?
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bloodstream
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are sweat glands considered to be endocrine glands?
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yes, they have ducts
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second messenger
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a molecule, starts the changes inside a cell after a specific substance binds to a receptor (outside of cell)
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target cell
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specific cells that horms travel to to create a certain effect.
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