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The Endocrine systemEfferent nerves may send information to stimulate what a b
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A. A response directlyB. Or send onformation to an endocrine gland to release a hormone
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The Endocrine systemRegulation of homeostasis is achieved through?
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Feedback loops. These are either positive or negative
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The Endocrine systemNegative feedback loops are what?
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Most common loop. Maintains homeostasis. Body detraects internal change ie when calcium levels low stimulation of parathyroid glands to secrete parathyroid hormone when blood calcium levels are low.Also stimulation of pancreas to secrete insulin in response to high glucose levels
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The Endocrine systemWhat are positive feedback loops?
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Less common. Do not reverse change but speed up detected change. Such as oestrogen released by ovariesstimulates other endocrine glands to secrete more oestrogen.
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The Endocrine systemMain endocrine glands are
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Piturity(base of brain)Adrenal glands (Above kidneys)Thyroid(neck)Parathyroid (behind thyroid)Pancreas(near stomach)Ovaries/Testies
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The Endocrine systemWhich are faster to respond, hormones or nerves?
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Nerves
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The Endocrine systemWhat does catabolic meanGive an example
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To break downCortisol- stimulates use of fat and glucose
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The Endocrine systemWhat does anabolic mean.Give an example
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To build up.Growth hormone builds
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The Endocrine systemWhat is a diurnal cycle
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Daily
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The Endocrine systemWhat are trophic hormones?
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Hormones that go to another gland which then makes another hormone this includes growth hormone
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The Endocrine systemPiturity glandName the hormone
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Growth hormone
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The Endocrine systemName the actions of the piturity gland
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Increases fat metabolism(lipolysis)Increases glycogen synthesisIncreases blood glucose levelsPromote growth in children and young adultsPromotes muscle mass
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The Endocrine systemAdrenal glands hormones
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Corticosteroid cortisol and catecholaminesadrenalinenoradrenaline
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The Endocrine systemAdrenal glands actions
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Regulates stress response and immune responsecontrol of carbohydrate/fat/protein metabolism.Faciloitate sympathetic nervous systemResponse to environmentIncrease heart rateblood pressuremobilise fat from adipose tissuebreakdown glycogen into glucose
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The Endocrine systemThyroid gland hormone
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Thyroid hormone
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