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Aphy 201 Digestion quizzes - Questions with Correct Answers
(Latest Update)
Chylomicrons are large, protein-coated droplets of fat (triglycerides) formed within the intestinal cells and then exocytosed to enter lacteals. true false - ✔️ ✔️ True Distension of the duodenum: reflexively contracts the pyloric sphincter reflexively releases the cardiac sphincter reflexively stimulates gastric motility reflexively inhibits jejunum motility - ✔️ ✔️ reflexively contracts the pyloric sphincter The main propulsive force that occurs in the majority of the alimentary canal is called. swallowing defecation segmentation peristalsis ingestion - ✔️ ✔️ peristalsis The pancreatic acinar cell secretions include the proteases trypsinogen, chymotrypsinogen, and procarboxypeptidase that will be modified into their active form by the brush border enzyme enterokinase in the small intestine. True False - ✔️ ✔️ true Acids in the duodenal chyme promote the release of this hormone: gastrin sodium bicarbonate
secretin aldosterone - ✔️ ✔️ secretin Which regulatory chemical stimulates gastric gland activity and motility? gastrin histamine cholecystokinin secretin - ✔️ ✔️ gastrin What does pepsin enzyme do? - ✔️ ✔️ splits proteins into peptide fragments in the stomach What does carboxypeptidase enzyme do? - ✔️ ✔️ splits amino acids from peptides in small intestine what does amylase do? - ✔️ ✔️ digests starch what does lipase do? - ✔️ ✔️ Digests triglycerides into glycerol and free fatty acids The short reflexes in the digestive system are stimulated by. higher brain centers the sympathetic division of the autonomic nervous system the enteric nerve plexuses the parasympathetic division of the autonomic nervous system - ✔️ ✔️ the enteric nerve plexuses This hormone secreted by the small intestine when stimulated by acid in chyme causes the pancreas to secrete sodium bicarbonate. cholecystokinin secretin gastrin enterokinase - ✔️ ✔️ secretin
carbohydrates - ✔️ ✔️ fat The mechanical and chemical receptors that control digestive activity are located: in the walls of the digestive tract in the hepatic portal vein in the spinal cord in the hypothalamus - ✔️ ✔️ in the walls of the digestive tract Which of the following controls passage of food material from the stomach? pyloric sphincter cardiac sphincter hepatopancreatic sphincter ileocecal valve - ✔️ ✔️ pyloric sphincter As the stomach distends with the food from the next meal, the reflex relaxes the ileocecal sphincter and the reflex activates mass movements in the colon. defecation; gastroileal swallowing; gastroileal gastrocolic; gastroileal gastroileal; gastrocolic - ✔️ ✔️ gastroileal; gastrocolic A hormone that stimulates secretion by the gastric parietal cell is: pepsin gastric inhibitory peptide secretin gastrin - ✔️ ✔️ gastrin In general, the parasympathetic nervous system is to the digestive tract. excitatory
inhibitory - ✔️ ✔️ excitatory The most potent stimulus for gastrin release is in the lumen of the stomach. protein fat carbohydrates vitamins and minerals - ✔️ ✔️ protein The produces bile which aids in the digestion of lipids and is stored in the gallbladder. pancreas parotid salivary gland liver intestinal crypts - ✔️ ✔️ liver Worn-out red blood cells are destroyed and the hemoglobin is degraded to a yellow pigment known as , which is excreted into the bile. bilirubin myoglobin sarcoplasmic reticulum gastrin - ✔️ ✔️ bilirubin From which part of the alimentary canal is the greatest amount of water absorbed? large intestine esophagus jejunum stomach pharynx - ✔️ ✔️ jejunum The final product of carbohydrate digestion is.
stimulates the release of pancreatic insulin inhibits large intestine secretion stimulates gastric peristalsis stimulates the release of bicarbonate by the pancreas - ✔️ ✔️ stimulates the release of bicarbonate by the pancreas During deglutition, the bolus passes into the stomach from the esophagus through the. urethral sphincter gastroesophageal sphincter ileocecal valve esophageal sphincter - ✔️ ✔️ gastroesophageal sphincter What lymphatic structure absorbs lipids in the intestine? lymphatic duct collecting vessel Peyer's patches lacteal lymphatic trunk - ✔️ ✔️ lacteal The hormone that stimulates gallbladder contraction, stimulates pancreatic secretion of enzyme-rich pancreatic juice, relaxes the hepatopancreatic sphincter, and inhibits gastric motility and secretion is: gastrin secretin cholecystokinin insulin - ✔️ ✔️ cholecystokinin Haustal contractions are responsible for mixing the colonic contents, whereas mass movements periodically propel the colonic contents long distances. True False - ✔️ ✔️ True
Which of the following cells produce pepsinogen? parietal cells chief cells enteroendocrine cells mucous cells - ✔️ ✔️ chief cells
