We Know That Nutrient Receptors Are Located Within the Intestines

Multiple Choice

We know that nutrient receptors are located within the intestines because

A) injection of nutrients into the duodenum will induce eating.
B) infusion of fatty acids into the duodenum increases the firing rate of afferent axons from the gut.
C) infusion of amino acids into the stomach increases the firing rate of afferent axons from the gut.
D) infusion of glucose into the duodenum increases the firing rate of afferent axons from the gut.
E) eating is not altered by surgery that cuts the gut afferents.