Endocrine 2

Question 1

feedback loop

Answer 1

• a concentration of “something” is sensed and then leads to either upreg or downreg of an endocrine product
• most feedback is negative - adequate concentration turns off some stimulatory sequence, keeps hormonal levels from increasing to abnormal levels

Question 2

short feedback loop

Answer 2

• involve only hormone and metabolite

Question 3

long feedback loop

Answer 3

• involve multiple hormones (especially pituitary trophic hormones)

Question 4

how do you find a problem within a feedback loop?

Answer 4

• measure the hormone
• measure the metabolite
• measure the stimulatory hormone
• pinpoints failure