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Unit 4 Chapter 25

Quiz 100%

QuestionAnswer
True or False: Both chemical and mechanical digestion start in the mouth and continue in the stomach. True
Which of the following is not an accessory organ of digestion? Tongue Liver Pancreas Salivary glands Spleen Spleen
Bacteria constitute about __________blank% of the dry weight of the feces. 30
The layer that is responsible for the motility that propels food and residue through the digestive tract is called the __________blank. muscularis externa
True or False: The enteric plexus regulates much of the digestive activity, but its action depends on the central nervous system. False
Which of the following occurs in response to chemical irritants or sensory stimuli? Vomiting Mechanical digestion Segmentation Mass movement Deglutition Vomiting
True or False: Chylomicrons are secreted from the basal surface of the absorptive cells and taken into the lacteal in the villus. True
Necessary for Vitamin B12 absorption, __________blank is/are secreted by __________blank cells. intrinsic factor; parietal
Where does most nutrient absorption occur? Small intestine
Where do mass movements occur? Large intestine
Which cell type is responsible for HCl production in the stomach? Parietal cells
Carbohydrate digestion begins in the __________blank, whereas protein digestion begins in the __________blank. mouth; stomach
Which of the following enzymes functions at the lowest pH? Salivary amylase Pancreatic amylase Pepsin Trypsin Dipeptidase Pepsin
The __________blank regulates the flow of contents from the stomach to the duodenum. pyloric sphincter
The __________blank stores excess glucose and releases it into the blood when needed. liver
The muscle tone of the __________blank along the colon contracts it lengthwise, causing its walls to bulge and form pouches called __________blank. taeniae coli; haustra
The enzyme that catalyzes the first step reaction in HCl production by gastric parietal cells is called __________blank. carbonic anhydrase
Which of the following nutrients is absorbed by the lacteals of the small intestine? Triglycerides
Defecation is stimulated by __________blank. stretching of the rectum
The uptake of nutrient molecules into the body’s own tissues is called __________blank. absorption
Which of the following is the accessory organ of digestion responsible for producing bile? Liver
__________blank is a hormone, whereas __________blank is an enzyme. Secretin; pepsin
Infants have __________blank deciduous teeth, whereas adults have up to __________blank permanent teeth. 20; 32
True or False: Odor, sight, and taste stimulate salivatory nuclei in the cerebral cortex. False bc salivatory nuclei is located in the brainstem near the junctionof the pons and the medulla oblongata
Created by: Gluis5974
 

 



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