Chapter 25
About this set
Created by:
Aidin_Black on April 25, 2012
Subjects:
Log in to favorite or report as inappropriate.
Order by
79 terms
Terms | Definitions |
|---|---|
 The pathway of bile from the bile canaliculus to the gallbladder is-bile ductile > hepatic duct > common hepatic duct > cystic duct -bile ductile > hepatic duct > cystic duct > bile duct | bile ductile > hepatic duct > common hepatic duct > cystic duct Billy hates combing ducks. |
| The gastroileal reflex relaxes the ileocecal valve when the stomach is full of food. | true |
| The external anal sphincter allows for voluntary control over the time of defecation. | true |
| Digestive enzymes digest each other, allowing the amino acids to be absorbed and reused. | true |
| There are normally 32 teeth in the maxilla and 32 in the mandible. | false |
| A high-fat meal remains in the stomach longer than a high carbohydrate meal. | true |
| The intestinal crypts contain chief cells, parietal cells, and G cells. | false |
| Positive feedback is important in the production of pepsin in the stomach | true |
| Due to postmortem shrinkage, the small intestine is shorter in a cadaver than it is in a living person. | false |
| There are no gastric glands in the fundic stomach. | false |
| The pancreas secretes insulin and glucagon into the duodenum. | false |
| The stomach lining is so well produced by mucus and tight junctions that its epithelial cells die at a very slow rate. | false |
| Ingested food raises the pH of the stomach contents. | true |
| The stomach secretes gastrin when its internal pH rises. | true |
| The hormone secretin stimulates the stomach to secrete acid and enzymes | false |
| Chylomicrons are produced by the epithelial cells of the small intestine. | true |
| All of the following except ____ contribute to the large surface area available for nutrient absorption in the small intestine. -villi -rugae | rugae |
| Each of the following lists some of the tissue layers of the digestive tract. Which one has them in correct order from lumen to external surface? (lamp, mm's, sub, me, ser) | lamina propria, muscularis mucosae, submucosa, muscularis externa, serosa |
| Which of the following cells are not found in the gastric glands? chief cells goblet cells parietal cells | goblet cells |
| The swallowing center is located in the brainstem the enteric nervous system | the brainstem |
| All of the following glands secrete only mucus, except the -pyloric glands -duodenal glands -cardiac glands -gastric glands | gastric glands |
| An active transport pump called H+-K ATPase is essential for -neutralizing stomach acid as it enters the duodenum -the secretion of stomach acid | the secretion of stomach acid |
| Bacteria, destroying macrophages are found in sinusoids of the -liver -pancreas -appendix | liver |
| Vitamin B12, which is needed for red blood cell production, requires ____ for its absorption. intrinsic factor hydrochloric acid | intrinsic factor |
| Chylomicrons are produced in -the epithelial cells of the small intestine, as lipids are absorbed -the lymph, as fats are absorbed | the epithelial cells of the small intestine, as lipids are absorbed |
| The enterogastric reflex serves to -stimulate intestinal motility when there is food in the stomach -inhibit gastric motility when there is chime in the small intestine -relax the ileocecal valve when chime is on its way to the colon | inhibit gastric motility when there is chime in the small intestine |
| The release of bile into the duodenum is controlled by the -hepatopancreatic sphincter -gastroesophageal sphincter | hepatopancreatic sphincter |
| The falciform ligament -attaches the liver to the diaphragm -attaches the liver to the abdominal wall | attaches the liver to the abdominal wall |
| A hepatic triad consists of -the common hepatic duct, cystic duct, and common bile duct -a bile ductile and branches of the hepatic artery and hepatic portal vein | a bile ductile and branches of the hepatic artery and hepatic portal vein |
| Bile gets its yellow, green color mainly from cholesterol bile salts phopholipids bilirubin urobilinogen | bilirubin |
| Which of these is not a component of the pancreatic juice? deoxyribonuclease enterokinase | enterokinase |
| Which of these nutrients is absorbed by the lacteals of the small intestine? triglycerides glucose minerals | triglycerides |
| Which of these is the site of contact digestion? the brush border of the small intestine the cytoplasm of the small intestinal cells | the brush border of the small intestine |
| What are Peyer's patches, and where are they located? lymphatic follicles of the ileum lymphatic tissues of the oropharynx | lymphatic follicles of the ileum |
| Of the following components of bile, only ____ has/have a digestive function. bile salts bilirubin cholesterol | bile salts |
| All of the following enzymes digest proteins except chymotrypsin carboxypeptidase ribonuclease | ribonuclease |
| Pancreatic enzymes are secreted in response to the hormone -insulin -cholecystokinin -secretin | cholecystokinin |
| The function of enterokinase is to convert pepsinogen to pepsin convert trypsinogen to trypsin | convert trypsinogen to trypsin |
| Unlike the small intestine, the large intestine shows pouches called ____ along its length. haustra ceca | haustra |
| Bacteria constitute about ____ of the dry weight of the feces. 14% 30% 55% | 30% |
| The gastrocolic reflex triggers ___ in response to filling of the stomach. -segmentation contractions -haustral contractions -mass movements | mass movements |
| Dextrinase carries out the final stages in the digestion of -triglycerides -polysaccharides | polysaccharides |
| Cane sugar is digested by sucrase sucrose | sucrase |
| SGLT, an active transport pump of the small intestine, can only absorb glucose by simultaneously transporting- -water -sodium -potassium | sodium |
| In addition to active transport, glucose can be absorbed from the chime by means of- -facilitated diffusion -solvent drag | solvent drag |
| Which of the following enzymes functions at the lowest pH? pepsin trypsin | pepsin |
| Lecithin, a phospholipid, prepares fat for enzymatic digestion by breaking it up into -fatty acids and glycerol -high density lipoproteins -emulsification droplets | emulsification droplets |
| All of the following nutrients are absorbed by blood capillaries of the villus except- -glucose -cholesterol -phosphate | cholesterol |
| The absorption of ___ depends on the presence of vitamin D. cholesterol glucose calcium | calcium |
| Most of the water entering the digestive tract each day comes from -gastrointestinal secretions -metabolic water | gastrointestinal secretions |
| Which of the following enzymes does not digest any nutrients? carboxypeptidase enterokinase sucrase | enterokinase |
| All of the following are enzymes except secretin trypsin pepsin | secretin |
| The enterogastric reflex regulates the ____ phase of gastric activity. cephalic colonic intestinal | intestinal |
| The small intestine is suspended from the dorsal body wall by the mesentery the greater omentum the lesser omentum | the mesentery |
| Which one of the following is absorbed without being digested? cholesterol sucrose peptides | cholesterol |
| Most of the GI tract is composed of a ____ epithelium, while the oral cavity through the esophagus and lower anal canal are composed of a ____ epithelium. -simple columnar; nonkeratinized stratified squamos -simple columnar; simple squamos | simple columnar; nonkeratinized stratified squamos |
| This tissue layer consists of a thick layer of loose connective tissue containing blood vessels, lymphatic vessels, a nerve plexus, and in some places, glands that secrete lubricating mucus into the lumen. -tunica mucosa -tunica submucosa | tunica submucosa |
| This is the outer tunic in the oral cavity, pharynx, most of the esophagus, and the rectum. It is comprised of a fibrous connective tissue layer called the adventitia granulose | adventitia |
| The tunica mucosa contains smooth muscle called the ____, which is stimulated by the ____ plexus. muscularis mucosae; submucosal muscularis mucosae; myenteric | muscularis mucosae; submucosal |
| The extension of the peritoneum that loosely covers the small intestine like an apron is the ____, while the extension of the peritoneum that anchors much of the large intestine is the _____. lesser omentum; mesentery greater omentum; mesocolon | greater omentum; mesocolon |
| Inflammation of the greater or lesser omentum, mesentery, or mesocolon is called appendicitis peritonitis gastritis | peritonitis |
| This structure closes off the nasopharynx when you swallow. vestibule uvula frenulum | uvula |
| The tongue has a ____ epithelium and the site of the taste buds called ____. -nonkeratinized stratified squamos; papillae -nonkerantized stratified squamos; lingual glands | nonkeratinized stratified squamos; papillae |
| Infants have ___ deciduous teeth, while adults have ___ permanent teeth. 20; 32 10; 32 | 20; 32 |
| An individual has an impacted tooth. This tooth is most likely the first molar third molar | third molar |
| The tooth is anchored to alveolar bone by the periodontal ligament gingival sulcus | periodontal ligament |
| Gingivitis is a(n) ___ and is the leading cause of ___ in adults. tooth decay; tooth aches gum inflammation; tooth loss | gum inflammation; tooth loss |
| Most of a tooth consists of a hard, yellowish tissue called ____, which is covered by a hard layer of calcium phosphate crystals called _____. dentin; enamel cementum; enamel | dentin; enamel |
| The two living parts of a tooth are the dentin and enamel dentin and cementum | dentin and cementum |
| You were following a molecule of glucose from the artery outside the tooth to an odontoblast in the dentin. The pathway glucose would take is apical foramen > root canal > pulp cavity apical foramen > pulp cavity > root canal | apical foramen > root canal > pulp cavity |
| Salivary glands produce ___, which inhibits bacterial growth. IgF IgA IgG | IgA |
| Lingual lipase and lysozymes are produced by ___ salivary glands. intrinsic extrinsic | intrinsic |
| Mumps are most often caused by a viral infection of the _____ salivary glands. parotid intrinsic extrinsic | parotid |
| The esophagus pierces through the diaphragm at the _____, and its submucosa contains ___ glands that secrete mucus. hiatus; Brunner hiatus; esophageal hiatus; goblet | hiatus; esophageal |
| The tunica muscularis externa of the stomach contains two layers of smooth muscle three layers of smooth muscle | three layers of smooth muscle |
| In the gastric pits, ____ cells secrete HCI and intrinsic factor and _____ cells secrete pepsinogen. parietal; chief parietal; enteroendocrine | parietal; chief |
| Pepsinogen is produced by ___ cells and is activatedy by ___. -chief; HCI secreted by parietal cells -chief; carbonic anhydrase secreted by parietal cells | chief; HCI secreted by parietal cells |
| Pepsin digests ___ to ____. proteins; peptides proteins; amino acids | proteins; peptides |
| The ileocecal valves open in response to food in the ileum food in the stomach food in the large intestine | food in the stomach |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.