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Cards In This Set
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______ are chemical messengers that are released in one tissue and transported in the bloodstream ti alter the activities of specific cells in other tissues
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Hormones
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Peptide hormones are composed of
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Amino acids
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Neurons of the supraoptic and paraventricular nuclei of the hypothalamus manufacture
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ADH & OXT
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What element is neccessary for the production of thyroid hormone
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Iodine
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What hormone does the opposite of calcitonin
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Parathyroid hormone
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The zona fasciculata of the suprarenal cortex produces
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Glucocorticoids
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Alpha cells are to ______ as beta cells are to _____
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Glucagon/insulin
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A kinase is an enzyme that performs
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Phosphorylation
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An activated G protein can trigger
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A fall in cAMP levelsthe production of diacyglycerolthe release of calcium ions from intracellular storesthe opening of calcium ion channels in the membrane
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Calcium ions serve as messengers, often in combination with the intracellular protein
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Calmodulin
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The functional organization of the nervous system parallels that of the ______ system in many ways
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Endocrine
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The hypothalamus acts as both a neural and _____ organ
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Endocrine
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What substance activates protein kinases and thus acts as a second messenger
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Cyclic AMP
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What are the actions of hormones on cells
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Enzyme synthesis, enzyme quantities, ion channel gating, enzyme activities
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What happens after a steroid hormone binds to its receptor to form an active complex
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Gene transcription is initiated
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