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During the short busts of hormones releasing, how much secretion is there?
little to none
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When will an endocrine gland release its hormone in more frequent bursts?
When stimulated
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What happens during the absence of stimulation of hormones?
The blood level of the hormone decreases.
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What is hormone secretion regulated by? (3 things)
1. Signals from the nervous system
2. chemical changes in the blood
3. other hormones
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Most hormonal regulatory ststems work via negative feedback, but a few operate via...
positive feedback
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What, for many years, was called the "master" endocrine gland & why?
The pituitary gland because it secretes several hormones that control other endocrine glands
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Not the pituitary gland, but the ___ is the "master" endocrine gland?
hypothalamus
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Where is the major link between the nervous and endocrine systems?
The hypothalamus--the small region of the brain below the thalamus.
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How many different hormones does the hypothalamus synthesize?, pituitary gland?
hypothalamus-9
pituitary-7
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Together the hypothalamus and pituitary gland play important roles in the regulation of virtually all aspects of what?
growth, development, metabolism and homeostasis
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The pituitary gland is a pea-shaped structure that lies where?
In the hypophyseal fossa of the sella turcica of the sphenoid bone.
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How does the pituitary gland attach?
It attaches to the hypothalamus by a stalk, the infundibulum.
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What are the 2 anatomically and functionally seperate portions of the pituitary gland called?
the anterior pituitary and the posterior pituitary.
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