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endocrine system chapter 17
Terms in this set (11)
Works with the NS to bring
Both use specific
and affect specific target
Releases hormones into the
bloodstream for distribution
throughout the body
Longer periods of effect
compared to the N.S
a gland that secretes its product to the outside world
a ductless gland that secretes hormones directly into the bloodstream
chemical substance secreted by endocrine glands that affect body processes
only target cells with specific receptors for the hormone respond to that hormone
peptide, steroid, biogenic
most of our body's hormones
Formed from chains of amino acid, also called protein hormones
Combine with receptors on target cell's membrane, second messenger system
Ex. growth hormone
Derived from cholesterol
Easily diffuses through membranes, form hormonereceptor complex in nucleus and can activate specific genes, transcribe mRNA and make proteins.
Small molecules produced by altering the structure of a specific amino acid
Can either bind to receptors on membrane or in cytoplasm
Ex. thyroid hormone
negative feedback loop
A feedback loop that causes a system to change in the opposite direction from which it is moving
positive feedback loop
Causes a system to change further in the same direction.
As the master control center of the endocrine system, oversees most endocrine activity.
Special cells secrete hormones that influence the secretory activity of the ant. pit. (regulatory hormones)
releasing hormones (RH)
inhibiting hormones (IH)
Directly oversees the stimulation and hormone secretion of the adrenal medulla.
THIS SET IS OFTEN IN FOLDERS WITH...
general and special senses
urinary system chapter 24
reproductive system chap 28
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