Chapter 17: Digestive System Disorders Flashcards
- Which of the following cells in the gastric mucosa produce intrinsic factor and hydrochloric acid?
a. Parietal cells
b. Chief cells
c. Mucous
cells
d. Gastrin cells
a. Parietal cells
- Which of the following is the primary site for absorption of nutrients?
a. Stomach
b. Duodenum
c. Ileum
d. Ascending colon
c. Ileum
- When highly acidic chyme enters the duodenum, which hormone stimulates the release of pancreatic
secretions that contains very high bicarbonate ion content?
a. Gastrin
b. Secretin
c. Cholecystokinin
d. Histamine
b. Secretin
- Which of the following breaks protein down into peptides?
a. Amylase
b. Peptidase
c. Lactase
d. Trypsin
d. Trypsin
5. In which structure is oxygenated blood (arterial) mixed with unoxygenated blood (venous) so as to support the functions of the structure? a. Pancreas b. Liver c. Small intestine d. Spleen
b. Liver
- Which of the following stimulates increased peristalsis and secretions in the digestive tract?
a. Sympathetic nervous system
b. Vagus nerve
c. Increased saliva
d. Absence of food in the
system
b. Vagus nerve
- Which of the following is contained in pancreatic exocrine secretions?
a. Bicarbonate ion
b. Hydrochloric acid
c. Activated digestive
enzymes
d. Insulin
a. Bicarbonate ion
- The presence of food in the intestine stimulates intestinal activity but inhibits gastric activity through the:
a. defecation reflex.
b. enterogastric reflex
c. vomiting reflex.
d. autodigestive reflex
b. enterogastric reflex
- Which of the following processes is likely to occur in the body immediately after a meal?
a. Lipolysis
b. Ketogenesis
c. Gluconeogenesis
d. Glycogenesis
d. Glycogenesis
- What does the term gluconeogenesis refer to?
a. Breakdown of glycogen to produce glucose
b. Conversion of excess glucose into glycogen for
storage
c. Formation of glucose from protein and fat
d. Breakdown of glucose into carbon dioxide and water
c. Formation of glucose from protein and fat
- Normally, proteins or amino acids are required to produce all of the following EXCEPT:
a. peptide hormones.
b. clotting factors and
antibodies.
c. cellular energy.
d. hemoglobin
c. cellular energy.
- Which of the following statements applies to bile salts?
a. They give feces the characteristic brown color.
b. They are enzymes used to break down fats into free fatty
acids.
c. They emulsify lipids and lipid-soluble vitamins.
d. They are excreted in the feces
c. They emulsify lipids and lipid-soluble vitamins.
- The visceral peritoneum:
a. lines the abdominal wall.
b. hangs from the stomach over the loops of small
intestine.
c. contains many pain receptors.
d. forms the outer covering of the stomach
d. forms the outer covering of the stomach
- The early stage of vomiting causes:
a. metabolic alkalosis.
b. metabolic acidosis.
c. increased respirations.
d. increased excretion of hydrogen
ions.
a. metabolic alkalosis.
- Yellow or greenish stained vomitus usually indicates the presence of:
a. bile.
b. blood.
c. protein.
d. bacteria.
a. bile.
- Small, hidden amounts of blood in stool are referred to as:
a. melena.
b. occult blood.
c. frank blood.
d. hematemesis.
b. occult blood.
- Severe vomiting can lead to metabolic acidosis because of increased:
a. ketones produced.
b. CO2
retained in the lungs and kidneys.
c. hypovolemia and lactic acid
production.
d. metabolic rate
c. hypovolemia and lactic acid
production
- Which of the following applies to the act of swallowing?
a. It requires coordination of cranial nerves V, IX, X, and
XII.
b. It is entirely voluntary.
c. It is controlled by a center in the hypothalamus.
d. It does not affect respiration.
a. It requires coordination of cranial nerves V, IX, X, and
XII.
- What does the defecation reflex require?
a. Stimulation by the sympathetic nervous
system
b. Contraction of the internal anal sphincter
c. Coordination through the sacral spinal cord
d. Voluntary relaxation of pelvic muscles
c. Coordination through the sacral spinal cord
- What is the definition of dysphagia?
a. A herniation of the gastric mucosa through a segment of weakened
muscle
b. Recurrent reflux of chyme into the esophagus
c. Absence of a connection of the esophagus to the stomach
d. Difficulty in swallowing
d. Difficulty in swallowing
- What does congenital esophageal atresia cause?
a. Direct passage of saliva and food from the mouth into the
trachea
b. Repeated reflux of gastric secretions into the esophagus
c. No fluid or food entering the stomach
d. Gastric distention and cramp
c. No fluid or food entering the stomach
- Which of the following applies to cleft palate?
a. The mandibular processes do not fuse.
b. The hard and soft palates do not fuse during the first trimester of
pregnancy.
c. Exposure to environmental factors in the last trimester causes the defect.
d. Speech and eating are not affected.
b. The hard and soft palates do not fuse during the first trimester of
pregnancy.
- Oral candidiasis is considered to:
a. be a common bacterial infection in infants and young
children.
b. cause painful ulcerations in the mucosa and tongue.
c. cause white patches in the mucosa that cannot be scraped off.
d. be an opportunistic fungal infection of the mouth.
d. be an opportunistic fungal infection of the mouth
- Why does herpes simplex infection tend to recur?
a. Active infection is usually asymptomatic
b. The virus builds up a resistance.
c. The virus persists in latent form in sensory nerve ganglia.
d. The virus mutates; therefore, no effective immunity
develops
c. The virus persists in latent form in sensory nerve ganglia.