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| ductless, deliver hormones via blood, to special cells with special receptors to recognize hormones |
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| usually responsive to several differnt types of hormones, may be antagonistic, synergistic, or permissive |
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Occur when two or more hormones work together to produce a particular effect
-additive epinephrin norepinephrine work together produce same effect
-complementary work together in own way to produce a certain outcome |
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Definition
occurs when hormones work in opposite directions
-insulin for fat storage, glucagon for fat breakdown |
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Definition
| hormones bind to receptors on or in cells, are highly specific bind to receptors with high affinity and low capacity |
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| receptors located in cytoplasm, translocate to nucleus and bind to dna |
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| hormones that cannot cross the cell membrane, bind to receptors on the cell surface. |
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secretes two types of hormones
ADH and Oxytocin |
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Term
| hypothalamic control of posterior pituitary |
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Definition
ADH and oxcytocin are produced by supraoptic and paraventricular nuclei of the hypothalamus
transported by hypothalamul hypophysial tract
release is controlled by neuroendocrine reflexes |
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found atop the kidneys
outer adrenal cortex and inner adrenal medulla function as seperate glands |
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| secretes epinephrine and norepinephrine in response to hypothalamus |
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| secretes steroid hormone in response to ACTH |
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| help in regulation of NA and K such as aldosterone |
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| regulates glucose metabolism example cortisol |
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| stress and the adrenal gland |
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Definition
| stress releases ACTH increases glucocorticoid release this is called general adaptation syndrome |
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| action of thyroid hormone |
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Definition
increases rate of cellular respiration
stimulates protein synthesis
maturation of nervous system |
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Definition
made by parafollicular cells
prevents calcium loss in bones stimulates excretion of calcium from kidneys to lower blood calcium levels |
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| promotes rise in blood calcium levels acts on bones kidneys and intestines |
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secreted by beta cells in response to blood glucose levels
-purpose is to lower blood glucose level |
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purpose is to lower blood sugar levels
iver stimulates glycogen into glucose and releases it into the blood.
stiumlates glyconeogenisis and lypolysis |
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secretes melatonin
located above third ventricle of the brain |
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Term
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Definition
| The sender and receiver are the same cell type. |
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Term
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Definition
| The sender and receiver are different cell types/tissues |
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