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Brandi Sizemore

Week 13 Activity Physiology

QuestionAnswer
The act of expelling feces is called defecation
The chemical process in which a compound unites with water and then splits into simpler compounds is called hydrolysis
Because fats are insoluble in water, they must be emulsified
CCK is an intestinal hormone that - causes the pancreas to increase secretion of exocrine high in enzymatic content. -opposes the influence of gastrin on gastric parietal cells. -stimulates contraction of the gallbladder so that bile can pass into the duodenum.
Stimulation of gastric secretion occurs in all of the following phases except the _____ phase. digestive
Perstalsis is regulated in part by the intrinsic stretch reflexes. It is also thought to be stimulated by the hormone. cholecystokinin (CCK)
The process of deglutition includes all of the following except the ____ stage. laryngeal
During which stage of swallowing is there a risk of food entering respiratory pathways? Oropharyngeal
The wave like ripple of the muscle layer of the GI tract is called peristalsis.
What percentage of this blood flow comes from the hepatic portal system? 80%
Chemical digestion requires the secretion of _______ into the lumen of the GI tract. digestive enzymes and bile.
Pepsinogen is converted to pepsin by hydrochloric acid, which is produced by the _________ of the gastric glands. parietal cells
_________ is the passage of substances through the intestinal mucosa into the blood or lymph. Absorption
The final step in lipid transport by the intestines is the formation of chylomicrons.
The ejection of bile from the gallbladder is controlled by which hormones? CCK and secretin
Fats and other nutrients in the duodenum stimulates the intestinal mucosa to release a hormone called gastric inhibitory peptide.
Saliva contains the enzyme amylase.
Created by: Brandi Sizemore
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