A&P II - Chapter 24, The Digestive System Practice Questions

Which of the following contains skeletal muscle? a) Muscularis b) Mucosa c) Serosa d) Submucosa

a. muscularis

This plexus is located between the longitudinal and circular smooth muscle layers of the muscularis. a) ENS b) Myenteric plexus c) Submucosal plexus d) Digestive plexus e) Absorption plexus

b. myenteric plexus

Which of following processes is the function of the smooth muscle layer of the digestive system? a) Ingestion b) Secretion c) Mixing and propulsion d) Absorption e) None of these choices

c. mixing and propulsion

In the mouth, the tooth sockets are lined with a) Gingivae b) Cementum c) Periodontal ligament d) Pulp e) Root

c. periodontal ligament

The capability of the GI tract to move material along its length is called 1. Motility 2. Propulsion 3. Digestion 4. Defecation a) 1 only b) 2 only c) 3 only d) 4 only e) Both 1 and 2

a. 1 only

Deciduous molars are replaced by a) Bicuspids b) Molars c) Incisors d) Canines e) Wisdom teeth

a. bicuspids

Which of the following pancreatic enzymes acts on peptide bonds? a) Chymotrypsin b) Amylase c) Pepsin d) Phosphatase e) Nucleosidase

a. chymotrypsin

This portion of the peritoneum drapes over the transverse colon and coils of the small intestine. a) Greater omentum b) Falciform ligament c) Lesser omentum d) Mesentery e) Mesocolon

a. greater omentum

This structure regulates the flow of material into the colon. a) Ileocecal sphincter b) Pyloric sphincter c) Appendix d) Sigmoid colon e) Anal canal

a. ileocecal sphincter

Which of following processes is the primary function of the mouth? a) Ingestion b) Secretion c) Mixing and propulsion d) Absorption e) None of these choices

a. ingestion

Which of the following enzymes acts to produce monoglycerides as one product? a) Lipase b) Amylase c) Trypsin d) Phosphatase e) Ligase

a. lipase

This major duct carries a fluid rich in bicarbonate ions. a) Pancreatic duct b) Hepatopancreatic duct c) Cystic duct d) Bile duct e) Hepatic duct

a. pancreatic duct

This layer functions by secreting a lubricating fluid. a) Serosa b) Submucosa c) Muscularis d) Mucosa e) MALT

a. serosa

This layer of the GI tract is composed of areolar connective tissue that binds the mucosa to the muscularis. a) Submucosa b) Lamina propria c) Epithelium d) Serosa e) None of these choices

a. submucosa

How many stages of deglutition are there? a) 2 b) 3 c) 4 d) 5 e) 8

b. 3

Which of the following pancreatic enzymes acts on glycogen and starches? a) Chymotrypsin b) Amylase c) Trypsin d) Phosphatase e) Nucleosidase

b. amylase

This is the principal bile pigment. a) Stercobilin b) Bilirubin c) Biliverdin d) Both Stercobilin and Bilirubin e) All of these choices

b. bilirubin

This portion of the peritoneum attaches the liver to the anterior abdominal wall and diaphragm. a) Greater omentum b) Falciform ligament c) Lesser omentum d) Mesentery e) Mesocolon

b. falciform ligament

This layer of the GI tract is composed of areolar connective tissue containing blood and lymph vessels. a) Mucosa b) Lamina propria c) MALT d) Muscularis e) Epithelium

b. lamina propria

Which of the following secrete hydrochloric acid? a) Mucous cells b) Parietal cells c) Chief cells d) Serosa cells e) Chyme cells

b. parietal cells

Which of the following accessory organs produces a fluid to soften food? a) Teeth b) Salivary glands c) Liver d) Gallbladder e) Pharynx

b. salivary glands

This hormone functions to counteract the effect of gastric acid in the small intestine. a) Pepsin b) Secretin c) Gastrin d) Cholecystokinin e) Amylase

b. secretin

This cell secretes the hormone that promotes production of hydrochloric acid. a) Neck cell b) Chief cell c) G cell d) Chyme cell e) Parietal cell

c. G cell

These are composed of prominent lymphatic nodules that function in the immune response. a) Mucosa b) Lamina propria c) MALT d) Submucosa e) Serosa

c. MALT

Why do emotions such as anger or fear slow digestion? a) Because they stimulate the parasympathetic nerves supplying the GI tract b) Because they stimulate the somatic nerves that supply the GI tract c) Because they stimulate the sympathetic nerves that supply the GI tract d) They do not affect digestion e) Because all emotions are controlled by the Vagus nerve

c. because they stimulate the sympathetic nerves that supply the GI tract

Which of the following pancreatic enzymes digests lipids? a) Trypsin b) Elastase c) Lipase d) Pepsin e) All of these choices

c. lipase

Which of the following accessory organs produces a fluid that functions to emulsify dietary fats? a) Teeth b) Salivary glands c) Liver d) Gallbladder e) Pharynx

c. liver

Lateral to the base of the uvula in the mouth, this muscular fold runs posteriorly down the lateral sides of the soft palate to the pharynx. a) Uvula b) Palatoglossal arch c) Palatopharyngeal arch d) Parotid glands e) Sublingual glands

c. palatopharyngeal arch

This is found on the liver and is a remnant of the umbilical cord in a fetus. a) Coronary ligament b) Falciform ligament c) Round ligament d) Kupffer ligament e) Bile ductules

c. round ligament

Brunner's glands a) Secrete an acidic mucus b) Secrete an alkaline juice c) Secrete an alkaline mucus d) Secrete an acidic juice

c. secrete an alkaline mucus

Which of the following is NOT a function of the liver? a) Conversion of carbohydrates b) Protein metabolism c) Storage of bilirubin d) Phagocytosis e) Storage of vitamins

c. storage of bilirubin

Which of the following small intestine cells secrete lysozyme? a) Goblet cells b) Absorptive cells c) Mucosa cells d) Paneth cells e) S cells

d. Paneth cells

Which of following processes is the primary function of the villi of the small intestine? a) Ingestion b) Secretion c) Mixing and propulsion d) Absorption e) None of these choices

d. absorption

This hormone is stimulated by high levels of dietary fat in the small intestine. a) Pepsin b) Secretin c) Gastrin d) Cholecystokinin e) Amylase

d. cholecystokinin

Which of the following accessory organs stores bile? a) Teeth b) Salivary glands c) Liver d) Gallbladder e) Pharynx

d. gallbladder

This digestive aid, produced by the stomach, begins digestion by denaturing proteins. a) Bicarbonate ion b) mucus c) Bile d) Hydrochloric acid e) Water

d. hydrochloric acid

This structure of the stomach allows greater distension for food storage. a) Cardia b) Fundus c) Pylorus d) Rugae e) Sphincter

d. rugae

How long can food stay in the fundus before being mixed with gastric juices? a) 10 minutes b) 20 minutes c) 30 minutes d) 45 minutes e) 1 hour

e. 1 hour

The hard palate 1. is the anterior portion of the roof of the mouth. 2. is formed by the maxillae and palatine bones. 3. is covered by a mucous membrane. a) 1 only b) 2 only c) 3 only d) Both 1 and 2 e) All of these choices

e. all of these choices

This portion of the peritoneum is largely responsible for carrying blood and lymph vessels to the intestines. a) Greater omentum b) Falciform ligament c) Lesser omentum d) Mesentery e) Mesocolon

e. mesocolon

Which of the following is NOT a primary function of the large intestine? a) Mechanical digestion b) Chemical digestion c) Absorption d) Feces formation e) Regulation of blood glucose

e. regulation of blood glucose