Digestive System Flashcards
Peristalsis is part of which digestive process?
a. Absorption
b. Ingestion
c. Propulsion
d. Chemical digestion
c. Propulsion
All of the following are part of the alimentary canal except the:
a. pharynx.
b. esophagus.
c. small intestine.
d. liver.
d. liver.
Simple columnar epithelium is found in which histological layer of the alimentary canal?
a. Submucosa
b. Muscularis
c. Serosa
d. Mucosa
d. Mucosa
Which histological layer of the alimentary canal is also known as the visceral peritoneum?
a. Submucosa
b. Muscularis
c. Serosa
d. Mucosa
c. Serosa
The membrane that lines the body wall of the abdominal cavity is the:
a. ventral mesentery.
b. visceral peritoneum.
c. parietal peritoneum.
d. retroperitoneum.
c. parietal peritoneum.
The teeth used to tear and pierce food are the:
a. incisors.
b. molars.
c. canines.
d. premolars.
c. canines.
The esophageal hiatus is found on this organ.
a. Esophagus
b. Stomach
c. Diaphragm
d. Pharynx
c. Diaphragm
Saliva is composed mainly of:
a. water.
b. amylase.
c. lingual lipase.
d. mucin.
a. water.
Which of the following phases of gastric secretion is a conditioned reflex?
a. Gastric phase
b. Cephalic phase
c. Intestinal phase
d. All three phases above are conditioned reflexes.
b. Cephalic phase
The gastric cells that secrete pepsinogen are the:
a. mucous neck cells.
b. parietal cells.
c. chief cells.
d. enteroendocrine cells.
c. chief cells.
Most of the digestive enzymes found in the small intestine are secreted by this accessory organ.
a. Liver
b. Gallbladder
c. Stomach
d. Pancreas
d. Pancreas
The fingerlike projections of the intestinal mucosa are called:
a. rugae.
b. plicae circulares.
c. brush borders.
d. villi.
d. villi.
This substance secreted by the pancreas helps neutralize chyme.
a. Chymotrypsin
b. Bile
c. Trypsin
d. Bicarbonate
d. Bicarbonate
This hormone triggers the release of enzyme-rich pancreatic juice.
a. CCK
b. Secretin
c. Gastrin
d. Bile
a. CCK
This hormone relaxes the hepatopancreatic sphincter.
a. CCK
b. Secretin
c. Gastrin
d. Bile
a. CCK
Which of the following is not part of the large intestine?
a. Cecum
b. Appendix
c. Ileum
d. Sigmoid colon
c. Ileum
The pocketlike sacs of the large intestine are called:
a. teniae coli.
b. haustra.
c. epiploic appendages.
d. cecae.
b. haustra.
The functions of the large intestine include all of the following except:
a. elimination of waste.
b. absorption of water and electrolytes.
c. absorption of nutrients.
d. production of vitamins.
c. absorption of nutrients.
Which of the following reflexes are we able to voluntarily control?
a. Gastroileal reflex
b. Gastrocolic reflex
c. Enterogastric reflex
d. Defecation reflex
d. Defecation reflex
Mass movement in the large intestine is initiated by the:
a. gastroileal reflex.
b. gastrocolic reflex.
c. enterogastric reflex.
d. defecation reflex.
b. gastrocolic reflex.
Amylase allows us to digest:
a. carbohydrates.
b. proteins.
c. fats.
d. all of these.
a. carbohydrates.
Which of the following enzymes is notfound in adults?
a. Carboxypolypeptidase
b. Lipase
c. Rennin
d. Chymotrypsin
c. Rennin
Which of the following is not an enzyme?
a. Rennin
b. Lipase
c. Pepsin
d. Bile
d. Bile
Which enzyme below digests disaccharides into monosaccharides?
a. Rennin
b. Pepsin
c. Lipase
d. Sucrase
d. Sucrase
Micelles are formed during the absorption of which nutrient?
a. Monosaccharides
b. Fatty acids
c. Amino acids
d. Disaccharides
b. Fatty acids
Intrinsic factor is produced in the stomach and is necessary for the absorption of:
a. triglycerides.
b. fat-soluble vitamins.
c. vitamin B12.
d. vitamin C.
c. vitamin B12.
