Describe the hormonal response to a meal.
For a good answer candidates were expected to have an integrated knowledge of
gastrointestinal physiology. Gut function is regulated by the enteric nervous system and by
paracrine and endocrine hormones released by hormone secreting cells in the mucosa of
the gut (enteroendocrine cells). These cells secrete hormones in response to neural
innervation or in response to triggers associated with ingested food. Gut functions
influenced include secretion, digestion, absorption and motility. The endocrine system also
has an important role in the handling of nutrients following absorption and some mention
of insulin was required.