Digestive System Quiz

The wall of the small intestine is composed of how many coats?

Four

The area identified in the figure below is the:

Fundus

Which drug may be given to the patient before a double-contrast examination of the stomach to relax the gastrointestinal tract?

Glucagon

The degree of body rotation for the PA oblique projection of the stomach will depend on the body habitus. The greatest degree of rotation would be used for which body habitus?

Hypersthenic

Where is the IR centered on sthenic patients for the double-contrast images of the large intestine?

Iliac crests

At which level is the IR centered for a PA projection of the stomach and duodenum?

L1/L2

At which level is the IR centered for an AP or PA oblique stomach and duodenum?

L1/L2

In which abdominal quadrant is the spleen located?

LUQ

Which projection is used for images made during defecography?

Lateral

The largest gland in the body is the:

Liver

The jejunum and ileum are attached to the posterior wall of the abdomen by the:

Mesentery

Where does the parotid duct open into the oral cavity?

Opposite the second upper molar

Which of the following will demonstrate the duodenal bulb and loop in profile?

PA oblique, RAO

What is the recommended oblique projection and position for the best demonstration of the esophagus?

PA, RAO

The contraction waves by which the digestive tube moves its contents toward the rectum are called:

Peristalsis

The two vessels that supply blood to the liver are the:

Portal vein and hepatic artery

The muscle controlling the opening between the stomach and the duodenum is termed the:

Pyloric sphincter

What is the recommended general body position for a radiographic series of the esophagus?

Recumbent

Which salivary gland is located on the floor of the mouth?

Sublingual

A PA projection of the stomach and duodenum is often performed using a 14 × 17-inch (35 × 43 cm) exposure field. Which of the following describes the plane that is centered to the grid for this projection?

The midsagittal plane

The small intestine is divided into how many distinct portions?

Three

The salivary glands produce how much saliva each day?

1 L

Which are essential oblique projections of the stomach and duodenum? 1. AP projection, LPO 2. PA projection, RAO 3. PA projection, LAO

1 and 2

Which projections will clearly demonstrate the descending colon? 1. PA oblique, LAO 2. AP oblique, RPO 3. Left lateral

1 and 2

Which methods are used to administer barium for a radiographic examination of the small intestine? 1. By mouth 2. Reflux filling 3. Enteroclysis

1, 2, and 3

How far above the anus is the enema bag placed during a barium enema?

18 to 24 inches

Which of the following are advantages of using the double-contrast technique for examination of the stomach? 1. Fewer images are required. 2. Small lesions are not obscured. 3. The mucosal lining of the stomach can be more clearly visualized.

2 and 3

Which of the following describes the function of the spleen? 1. Produces glucagon. 2. Produces lymphocytes. 3. Stores and removes dead red blood cells.

2 and 3

Where is the IR centered for images of the small intestine that are taken within 30 minutes of drinking the barium?

2 inches above the iliac crests

What is the length of the average adult small intestine?

22 feet

How long does it take barium to go through the alimentary canal and reach the rectum?

24 hours

The degree of body rotation for an AP oblique stomach radiographic images ranges from _____ degrees

30 to 60

Which position is used for the PA oblique projection of the esophagus?

35 to 40 degree RAO

How many natural constrictions are in the esophagus?

4

What is the average degree of body rotation for an AP oblique projection of the stomach and duodenum?

45 degrees

Food and fluid should be withheld for how many hours before a stomach examination?

8

At which plane is the central ray positioned for the PA oblique projections (LAO or RAO) of the large intestine?

A longitudinal plane 1 to 2 inches lateral to the midline of the body on the elevated side

Which of the following planes is positioned to the center of the grid for the lateral projection of the stomach and duodenum?

A plane passing midway between the midcoronal plane and the anterior surface of the abdomen

A PA projection of the stomach and duodenum can be performed using a 10 × 12-inch (24 × 30 cm) exposure field. Which of the following describes the plane that is centered to the grid for this projection?

A sagittal plane passing halfway between the midline and the lateral border of the abdomen

All of the following are the essential projections for an esophagus series, except:

AP axial oblique

Which projection of the stomach is demonstrated in this figure?

AP oblique

Which projection of the colon best demonstrates the lateral aspect of the ascending colon and the medial aspect of the descending colon, when the colon is inflated with air?

AP, left lateral decubitus

The patient preparation for a small intestine examination is food and fluid withheld:

After the evening meal and no breakfast

For which type of body habitus is the large intestine bunched together and positioned very low in the abdomen?

Asthenic

For which type of body habitus is the stomach nearly vertical?

Asthenic

The most common contrast medium used for radiologic examinations of the gastrointestinal tract is:

Barium sulfate

The pouchlike portion of the large intestine that is situated below the junction of the ileum and colon is the:

Cecum

The exocrine cells of the pancreas function to produce and secrete:

Digestive juice

One of the most important technical considerations in gastrointestinal radiography is:

Elimination of motion

The general term used to describe the surgical procedure of forming an artificial opening to the intestine for the passage of fecal material is:

Enterostomy