QuestionSBA
QuestionChoice
Digestion of food in the stomach is followed by the release of acidic chyme into the duodenum which initiates the intestinal phase of pancreatic secretion. The majority of pancreatic enzyme secretion occurs during this phase and is regulated by hormonal and neural mechanisms.
10006560
e
Presence of gastric acid in the duodenum
QuestionChoice
Sensory inputs such as sight, smell and taste of food, lead to the anticipation of food. These sensations initiate the cephalic phase of pancreatic secretion, which involves parasympathetic vagus nerve stimulation of acinar cells to produce digestive enzymes.
10006557
b
Smell of food
QuestionChoice
This initiates the gastric phase of pancreatic secretion. It primarily involves parasympathetic vagus nerve stimulation of acinar cells to produce digestive enzymes, similar to the cephalic phase.
10006556
a
Entry of food into the stomach
QuestionChoice
Tasting food prior to mastication can lead to the anticipation of food, which initiates the cephalic phase of pancreatic secretion.
10006558
c
Interaction of long-chain fatty acids with oral cavity receptors
QuestionChoice
The presence of amino acids and fatty acids in the duodenum causes the release of cholecystokinin which relaxes the sphincter of Oddi and induces gallbladder contraction, causing enzyme secretion. This occurs by the end of the gastric phase.
10006559
d
Presence of food in the duodenum
Concept
Chapter
2693
4520
Stages of pancreatic secretion
Topic
149
Gastro-intestinal physiology
13858
Which of the following initiates the gastric phase of pancreatic secretion?
a