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Physiology
activity 13
Question | Answer |
---|---|
The final step in lipid transport by the intestines is the formation of | micelles |
The wave-like ripple of the muscle layer of the GI tract is called | peristalsis |
During which stage of swallowing is there a risk of food entering respiratory pathways? | Oropharyngeal |
The ejection of bile from the gallbladder is controlled by which hormones? | CCK and secretin |
What percentage of this blood flow comes from the hepatic portal system? | 80 |
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. |
The chemical process in which a compound unites with water and then splits into simpler compounds is called | hydrolsis |
Peristalsis is regulated in part by the intrinsic stretch reflexes. It is also thought to be stimulated by the hormone | cholecystokinin (CCK) |
Fats and other nutrients in the duodenum stimulate the intestinal mucosa to release a hormone called | gastric inhibitory peptide. |
_____ is the passage of substances through the intestinal mucosa into the blood or lymph. | Absorption |
Chemical digestion requires the secretion of _____ into the lumen of the GI tract. | digestive enzymes and bile |
Saliva contains the enzyme | amylase |
The process of deglutition includes all of the following except the _____ stage. | laryngeal |
Stimulation of gastric juice secretion occurs in all of the following phases except the _____ phase. | digestive |
The act of expelling feces is called | defacation |
Pepsinogen is converted to pepsin by hydrochloric acid, which is produced by the _____ of the gastric glands. | parietal cells |
Because fats are insoluble in water, they must be | emulsified. |