6. Which of the following occurs during the swallow reflex? a. The glottis const
ID: 3519888 • Letter: 6
Question
6. Which of the following occurs during the swallow reflex? a. The glottis constricts to prevent food from entering into the larynx b. The lower esophageal sphincter closes to prevent gastric reflux c. The larynx elevates, causing the epiglottis to close over the glottis, preventing 17. Which of the following plays a role in the transport of single amino acids across the apical and basolateral membranes of the small intestinal mucosa cells? a. The low concentration of intracellular Na+ in intestinal mucosa cells b. Proton pumps c. Calcium ATPase pumps 18. Enterokinase is A brush border enzyme that activates ALL pancreatic enzymes a. b. A brush border enzyme that initiates the activation of pancreatic peptidases by converting trypsinogen to active trypsin c. An duodenal enzyme that phosphorylates and activates brush border enzymes 19. Which of the following is secreted from the pancreas into the duodenum? b. Bile c. Trypsin d. Enterokinase 20. Which of the following is TRUE? a. b. c. Brush border enzymes are secreted into the lumen of the small intestines Brush border enzymes are found in the precursor form and must be activated. Brush border enzymes ca continue and complete the digestion of proteins, andExplanation / Answer
16)during swallow reflex c the larynx elevates , causing the eliglottis to close over glottis preventing aspiration .
The swallow reflex prevents the food from entering trachea by closi the epiglottis.
17)a the low concentrations of intracellular Na+ in intestinal mucosa cells.
Transport across basolateral membrane occurs via passive diffusion.and sodium independent and sodium dependent carriers found in non epithelial mrmbrane of intestin mucosa.
18)ba brush border enzyme that initiates the activation of pancreatic peptidases by converting trypsinogen to active trypsin
Enterokinase enzyme is produced in duodenum.it helps in digestion of protein.it itself also hydrolyze peptides bond.
19)a inactive pancreatic peptidase
the pancreas release inactive pancreatic peptidase into duodenum which are converted by enterokinase to active trypsin.
20)c brush border enzyme c ontinue and continue and complete digestion of proteins and carbohydrates.
The final step of digestion occurs in intestinal lining by enterocytes.brush border enzymes ate found in microvilli. Brush border enzyme s are produces pr enterocytes.
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