anatomy of the GI tract

Question 1

what regulates hunger and satiety

Answer 1

• plasma glucose levels
• hormones
• stretch receptors in GI tract
• stress, body temperature, food palatability

Question 2

what hormones regulate hunger and satiety

Answer 2

leptin (produces in adipose tissue)
ghrelin (produces in stomach)
insulin (produces in pancreas)
glucagon (produces in pancreas)

Question 3

what happens in a well fed/absorptive state

Answer 3

• storage of fuels and protein synthesis
• glycogen synthesis
• insulin secretion - enhances glucose uptake and metabolism in cells, thereby reducing blood glucose