endocrine glands & hormones 20.1
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14 Terms
what are endocrine glands
ductless and secrete molecular products directly into blood
what does the endrocine system use as messengers
hormones
how are hormones transported through the body
to effectors through circulatory system
whats an effector for the endocrine system
any cell in the body with a receptor for the hormone
response time for endocrine system
relatively slow
range of effect of endocrine system
widespread effects throughout body
duration of response of endocrine system
long lasting
what does a hormones structure determine
how it interacts with the effector
what are the classifications of hormones
protein, biogenic amines, steroid
what are protein hormones formed by
chains of amino acids
what are biogenic amines
small molecules produced by altering the structure of a specific amino acid
what are steroid hormones
type of lipid derived from cholesterol
how does negative feedback work
when a stimulus starts a process but a hormone or product of its effect is secreted and turns off the process
how does positive feedback work
accelerates original process