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2 Cards in this Set

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What are the four characteristics of hormones
specific rates and rhythms of secretion, operate within feedback systems, affect only target cells with specific receptors for the homrone, constantly excreted by the kidneys or deactivated by the liver or cellular mechanisms.
What are the three secretion patterns of hormones
diurnal patterns, pulsatile and cyclic patterns and patterns that depend on levels of circulating substrates