endocrine 2

Which type of feedback mechanisms are more common with hormones?

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• positive

What type of hormone feedback mechanism occurs when an endocrine gland senses there is too much of a hormone circulating in the body, it decreases production of the hormone?

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If the body has too little of a circulating hormone, an endocrine gland begins to release more of that hormone until homeostasis occurs. This is what type of feedback mechanism:

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which hormone feedback mechanism happens when a bunch of a hormone is released which then causes an additional release of that same hormone?

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which feedback mechanism is when oxytocin is released, which causes uterine contractions. Uterine contractions cause additional oxytocin to be released?

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which feedback mechanism occurs when breast feeding causes the release of oxytocin, when milk is produced, more oxytocin is released.

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which hormone feedback mechanism is like how a thermostat works?

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The hypothalamus produces TRH. This causes the anterior pituitary gland to produce TSH, which causes the thyroid gland to produce T3 and T4. If the hypothalamus senses there is excess T3 and T4, it decreases production of TRH. This causes the anterior pituitary gland to decrease production of TSH, which causes the thyroid gland to decrease production of T3 and T4. What type of hormone feedback mechanism is this?

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Low blood calcium levels trigger parathyroid hormone (PTH) to release. PTH causes blood clalcium levels to rise by stimulating release of Calcium from bone. What type of feedback mechanism is this?

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The stimulation of adrenal medullary cells by sympathetic nervous system fibers triggers the release of catecholamines (epinephrine and norepinephrine) during stress. This feedback mechanism is called:

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