Nokea
Which of these is most associated with bile?
- A. liver
- B. pancreas
- C. gallbladder
- D. small intestine
Correct Answer: A
Rationale: The correct answer is A: liver. Bile is produced in the liver and stored in the gallbladder before being released into the small intestine to aid in digestion. The liver plays a crucial role in bile production, whereas the pancreas is primarily responsible for producing digestive enzymes. The gallbladder stores and concentrates bile but does not produce it. The small intestine is where bile acts to break down fats. Therefore, the liver is most associated with bile due to its production and regulation of bile.
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You are caring for a client with a nasogastric (NG) tube. Which task can be delegated to the experienced nursing assistant?
- A. Remove the NG tube per physician order.
- B. Secure the tape if the client accidentally dislodges the tube.
- C. Disconnect the suction to allow ambulation to the toilet.
- D. Reconnect the suction after the client has ambulated.
Correct Answer: B
Rationale: Securing the tape is a non-invasive task within the scope of a nursing assistant. Removing or reconnecting requires nursing assessment and should be done by licensed staff.
The tunica muscularis in the superior esophagus is made up of ______ muscle.
- A. skeletal
- B. cardiac
- C. smooth
- D. smooth and skeletal
Correct Answer: A
Rationale: The correct answer is A: skeletal muscle. The superior esophagus contains skeletal muscle in its tunica muscularis, allowing for voluntary control over swallowing. Cardiac muscle is found in the heart, not in the esophagus. Smooth muscle is present in the lower esophagus for involuntary movements. Choice D is incorrect as the superior esophagus does not contain a mix of smooth and skeletal muscle.
The gallbladder contracts in response to
- A. vagal stimulation only.
- B. cholecystokinin and vagal stimulation.
- C. cholecystokinin and secretin.
- D. a low pH of chyme.
Correct Answer: B
Rationale: The gallbladder contracts in response to cholecystokinin and vagal stimulation. Cholecystokinin is released in response to the presence of fatty acids and amino acids in the duodenum, signaling the gallbladder to contract and release bile. Vagal stimulation also plays a role in gallbladder contraction by transmitting signals from the brain to the gallbladder. Secretin is primarily involved in stimulating pancreatic secretion, not gallbladder contraction. A low pH of chyme does not directly stimulate gallbladder contraction.
Which of these is most associated with villi?
- A. haustra
- B. lacteals
- C. bacterial flora
- D. intestinal glands
Correct Answer: B
Rationale: The correct answer is B: lacteals. Villi are small finger-like projections in the small intestine that increase surface area for nutrient absorption. Lacteals are lymphatic vessels found in villi responsible for absorbing dietary fats. Haustra are pouches in the colon, not associated with villi. Bacterial flora is mainly found in the large intestine, not specifically associated with villi. Intestinal glands are responsible for producing digestive enzymes, but they are not directly associated with villi.
Patients with a paralytic ileus typically have:
- A. Intravenous fluid replacement and a nasogastric tube connected to suction.
- B. Surgical correction of the problem.
- C. Endoscopic injection of botulinum toxin or esophageal dilation.
- D. Endoscopy to allow biopsy followed with broad-spectrum antibiotics.
Correct Answer: A
Rationale: Paralytic ileus is typically managed with intravenous fluids to correct electrolyte imbalances and a nasogastric tube to decompress the bowel.