The gastrointestinal tract is often referred to as the “seco…

The gastrointestinal tract is often referred to as the “second brain” because it contains an extensive intrinsic nerve network that can function independently but is also influenced by the parasympathetic division of the autonomic nervous system. Which of the following best explains why the GI tract is called the “second brain”?

A patient presents with obstructive jaundice caused by a gal…

A patient presents with obstructive jaundice caused by a gallstone blocking the bile duct. Over time, the patient reports pale, greasy stools and unintended weight loss despite normal food intake. In an essay response, explain which macronutrient would be most affected by this condition and why. In your answer, describe 1) the normal role of bile in digestion, 2) the process of emulsification, how this supports enzymatic activity, and how impaired bile flow alters absorption and stool characteristics.