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21 Cards in this Set
- Front
- Back
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Catecholamine
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a class of hydrophlic chemical messengers dericed from tyrosine
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Eicosanoids
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a group of lipid-soluble compounds derived from arachidonic acid that includes leukotrienes, prostaglandins, prostacyclins, and thromboxanes
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Exocrine axis
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the integrated combination of the hypothalamus, hypophysis and target organ and the hormones secreted by each gland
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Endocrine gland
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a ductless gland producing an internal secretion that is discharged into the blood or lymph and circulated to all parts of the body
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Glycoprotein hormones
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a class of protein hormones consisting of 2 chains, each of which is modified by addition of carbohydrate residues
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Growth factors
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a diverse group of chemical messengers that stimulate mmitosis of specific cell types
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Half-Life
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the amount of time required for 50% of a substanceto be degraded
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Inhibiting Hormones
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hormones secreted by the hypothalamus that inhibit the secretion of horones from the adenohypophysis
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Endocrinology
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the study of the endocrine glands and their products, hormones
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Long-Loop Feedback
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the ability of the hormone secreted by the final target gland to regulate the secretion of hypothalamic and adenohypophysis
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Mixed Gland
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a gland having endocrine and exocrine components
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Pheromones
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a chemical messenger released into the external environment by one member of a species to modify the physiology of a different member of the sam species
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Preprohormone
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a precursor to a hormone that is converted to a prohormone by removal of the signal sequence
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Primer pheromone
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a pheromone hat causes a relatively slow behavioral response in the target organism
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Prohormone
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a precursor to a hormone that is modified, most often through a cleavage reaction, to generate the active form of the hormone
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Releaser (signaler) pheromone
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a pheromone that induces a relatively rapid behavioral response in the target organism
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Releasing hormone
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hormones secreted by the hypothalamus that stimulates the secretion of hormones from the adenohypophysis
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Short-loop feedback
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the ability of adenohypophyseal hormones to regulate the secretion of hypothalamic hormones
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Steroid Hormones
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a class of lipid-soluble hormones derived from cholesterol
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Trophic hormone
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a hormone that stimulates and maintains the size and function of a target land
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Ultarshort-loop feedback
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the ability of hypothalamic hormones to regulate their own secretion
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