Digestive System Exam (Chp24)

Which of the following is an expected age-related change in the digestive system?

A, B and C are correct.

Pancreatic juice includes all of the following EXCEPT:

HCl

The enteric nervous system

A, B and C are correct.

About 1/4000 babies are born with esophageal atresia, a condition in which the esophagus does not connect to the stomach. Many of these infants also have a fistula, or opening, that connects the esophagus to the trachea. How will esophageal atresia with tracheosesophageal fistula affect an infant?

C) The infant may develop pneumonia from milk entering the lungs.

Which of the following is NOT associated with the pharyngeal stage of deglutition?

The epiglottis opens, allowing the bolus to enter the larynx.

CCK

stimulates the release of pancreatic juice rich in digestive enzymes.

The mucosa of the alimentary canal

A and B are correct.

Which enzyme cannot be converted to its active form without the action of enterokinase?

trypsinogen

Which of the following homeostatic disturbances might result from liver failure?

decreased ability to maintain normal blood glucose levels

An individual suffering from hyposecretion by gastric chief cells would have

inadequate amounts of intrinsic factor and HCl.

The pancreas

C) passes pancreatic juice to the duodenum via the pancreatic duct and hepatopancreatic ampulla.

Each of the following can be absorbed across the epithelium of the small intestine EXCEPT:

triglycerides

The tongue

contains intrinsic muscles used in speaking and swallowing.

Which substances are NOT absorbed via some form of active transport?

fatty acids

The sodium bicarbonate in pancreatic juice elevates the pH of chyme, which

A and B are correct.

Which of the following is NOT absorbed by the gastric epithelium?

glucose

Place the following in the order in which chyme and, ultimately, feces pass through them.

1. descending colon

2. ascending colon

3. sigmoid colon

4. ileocecal valve

5. rectum

6. transverse colon

7. cecum

8. anus

4, 7, 2, 6, 1, 3, 5, 8

Hydrolysis of large biological molecules into smaller ones that can be absorbed by cells is

chemical digestion

Functions of the large intestine include:

All of these are correct.

The intestinal phase of digestion

is mediated by CCK and secretin.

Which of the following is NOT part of the alimentary canal?

Tounge

Why doesn't gastric juice digest the stomach?

A and B are correct.

Deglutition

A and B are correct.

Which histological feature of the small intestine is correctly matched to its product?

Paneth cells: lysozyme

Bacteria in the large intestine

All of these are correct.

The exit of the stomach, which is sometimes stenosed in infants, is the

pylorus

Saliva

All of these are correct.

The remains of a human child are found. There are some deciduous teeth in the jaws, but permanent incisors and 1st molars are clearly present and show some wear. Second molars are barely visible, but show no wear. Based on this evidence, the age of the child at the time of death

can be estimated as older than 6 years but less than 12 years of age.

Which of the following is NOT an accessory organ of digestion?

the appendix

The pharynx

extends from the internal nares to the esophagus.

Which of the following is correct?

The endoderm of the primitive gut forms the epithelium of most of the digestive tract.

Which of the following statements about a tooth is NOT correct?

The pulp cavity of a tooth is avascular, but is highly innervated.

Which substance listed is an enzyme, but does NOT digest triglycerides?

pancreatic amylase

The autonomic nervous system

A) can regulate the enteric nervous system.

The cephalic stage of digestion

C) prepares the mouth and stomach for the arrival of food.

The esophagus

A, B and C are correct.

Which of the following is NOT correct?

Lingual lipase is inactivated by the low pH of gastric juice.

The gallbladder

concentrates and stores bile.

The liver

makes bile.

Choose the answer that best matches the description or term.

A) crowns

B) cuspids

C) incisors

D) molars

E) roots

visible parts of teeth that show when a person smiles

A

Choose the answer that best matches the description or term.

A) absorption

B) defecation

C) digestion

D) ingestion

E) propulsion

movement of materials through GI tract, mostly via peristalsis

E

Choose the answer that best matches the description or term.

A) colon

B) duodenum

C) ileum

D) jejenum

E) rectum

longest part of small intestine; absorbs water and nutrients

C

Choose the answer that best matches the description or term.

A) crowns

B) cuspids

C) incisors

D) molars

E) roots

teeth with pointed surfaces; deciduous versions tear and shred food; permanent versions crush and grind food

B

Choose the answer that best matches the description or term.

A) absorption

B) defecation

C) digestion

D) ingestion

E) propulsion

release of fecal material through the anus

B

Choose the answer that best matches the description or term.

A) colon

B) duodenum

C) ileum

D) jejenum

E) rectum

temporary reservoir for feces

E