What is the cephalic phase of gastric secretion?
The cephalic phase of gastric secretion occurs in response to stimuli received by the senses—that is, taste, smell, sight, and sound. This phase of gastric secretion is entirely reflex in origin and is mediated by the vagus (10th cranial) nerve.
What is the cephalic phase of digestion quizlet?
Prepares the Digestive system before ingestion of food. Stimulation of the senses (sight, smell and taste) or thought of food will activate Parasympathetic Nervous system (via the vagus nerve).
What is the goal of the cephalic phase of gastric regulation quizlet?
Cephalic phase, Gastric phase, Intestinal phase. What occurs in the cephalic phase? Sight, smell, taste, sounds of food cooking or even thoughts of food trigger the vagus nerve to stimulate gastric secretions and increase gastric motility. You just studied 9 terms!
What happens cephalic phase?
The cephalic phase of digestion is the stage in which the stomach responds to the mere sight, smell, taste, or thought of food. About 20% of total acid secretion occurs before food enters the stomach.
What is gastric acid secretion?
Acid is secreted by parietal cells in the proximal two thirds (body) of the stomach. Gastric acid aids digestion by creating the optimal pH for pepsin and gastric lipase and by stimulating pancreatic bicarbonate secretion.
What stimulates the gastric and cephalic phase?
The cephalic phase of gastric secretion is initiated by the sight, smell, thought or taste of food. Neurological signals originate from the cerebral cortex and in the appetite centers of the amygdala and hypothalamus. This enhanced secretory activity is a conditioned reflex.
What are the phases of gastric secretion quizlet?
What are the three phases of gastric secretion? (1) Cephalic phase – extrinsic stuimulation of secretion by sight, smell, taste etc. (2) Gastric phase – food in the stomach. (3) Intestinal phase.
Which phase of gastric secretion is stimulated by the distention of the stomach?
vagovagal reflex
Once food has entered the stomach, distension of the stomach initiates a vagovagal reflex (gastric phase) that stimulates further secretion of pancreatic exocrine products. The intestinal phase is most important and accounts for about 75% of all pancreatic secretion.
Which phase of gastric secretion is stimulated quizlet?
During the cephalic phase of gastric secretion, increased production of gastric juice occurs. the intestinal reflex inhibits gastric emptying.
What happens during the intestinal phase of gastric secretion?
The intestinal phase is a stage in which the duodenum responds to arriving chyme and moderates gastric activity through hormones and nervous reflexes. The duodenum initially enhances gastric secretion, but soon inhibits it.
Which phase of gastric secretion is stimulated by the distention of the stomach quizlet?
Terms in this set (3) -Distention of the stomach activates a parasympathetic reflex.
What triggers the gastric phase of gastric secretion?
The gastric phase of digestive secretion happens after you swallow food, when protein stimulates the release of stomach acid and digestive enzymes. In the intestinal phase, the presence of food particles activates hormones that, in turn, cause the secretion of bicarbonate buffer, bile and additional digestive enzymes.
What are the three phases of gastric secretion?
Cephalic phase: In this phase the secretion of gastric juice is stimulated by smell,sight,and thought of food.
What occurs during the cephalic phase of the gastic digestion?
The Cephalic Phase Is Mediated by the Vagus Nerve through Acetylcholine and Gastrin. The cephalic phase of gastric secretion is mediated entirely through the vagus nerve. A variety of sensory stimuli including the sight, smell, and taste of food elicits acid secretion in the stomach.
What are the three phases of gastric activity?
Cephalic Phase. In the cephalic phase of digestion,the anticipation of food prepares the body for the digestion,absorption and use of nutrients in food,according to an article published