Nokea
The major secretory product of the colon is
- A. bicarbonate ions.
- B. mucus.
- C. digestive enzymes.
- D. hydrochloric acid.
Correct Answer: B
Rationale: The correct answer is B: mucus. The colon secretes mucus to protect the lining from digestive enzymes and acids, aid in the passage of stool, and maintain proper intestinal function. Bicarbonate ions (A) are secreted in the pancreas to neutralize stomach acid. Digestive enzymes (C) are primarily secreted in the small intestine to break down nutrients. Hydrochloric acid (D) is secreted by the stomach to aid in digestion but not by the colon.
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A nurse is teaching a client about strategies to manage gastroesophageal reflux disease (GERD). Which of the following statements should the nurse include?
- A. Elevate the head of your bed by 18 inches.'
- B. Avoid snacking between meals.'
- C. Limit foods that are high in fiber.'
- D. Avoid eating 2 to 3 hours before bedtime.'
Correct Answer: D
Rationale: The correct answer is D: Avoid eating 2 to 3 hours before bedtime. This is because lying down after eating can worsen GERD symptoms by allowing stomach acid to flow back up into the esophagus. By avoiding eating close to bedtime, the client can reduce the risk of acid reflux.
A: Elevating the head of the bed helps reduce nighttime symptoms, but it is not the most essential strategy.
B: Avoiding snacking between meals can help, but the timing of meals is more crucial for managing GERD.
C: Limiting foods high in fiber is not directly related to managing GERD; it is more about avoiding trigger foods like citrus, caffeine, and fatty foods.
What is a common complication following a laparoscopic cholecystectomy?
- A. Bile leak
- B. Wound infection
- C. Deep vein thrombosis
- D. Pulmonary embolism
Correct Answer: A
Rationale: The correct answer is A: Bile leak. After a laparoscopic cholecystectomy, bile leak is a common complication due to injury to the bile ducts during surgery. This can lead to abdominal pain, infection, and other serious complications. Wound infection (B) is less common in laparoscopic surgeries. Deep vein thrombosis (C) and pulmonary embolism (D) are more associated with prolonged immobility post-surgery, which is less of a concern in laparoscopic cholecystectomy.
A 55-year-old female client comes to the clinic for a physical examination. Which of the following screening tests would the nurse recommend the client have beginning at the age of 50 and every 10 years after?
- A. Colonoscopy
- B. Ultrasound of the kidney
- C. Mammogram
- D. Pap smear
Correct Answer: A
Rationale: The correct answer is A: Colonoscopy. Beginning at age 50, it is recommended every 10 years to screen for colorectal cancer. This screening test is essential for early detection and prevention of colon cancer. Colonoscopy allows for direct visualization of the colon and removal of any precancerous polyps.
Choice B: Ultrasound of the kidney is not a recommended screening test for a 55-year-old female. Kidney ultrasound is typically used for evaluating specific kidney conditions, not as a routine screening test.
Choice C: Mammogram is typically recommended for breast cancer screening in women starting at age 40, not every 10 years after age 50.
Choice D: Pap smear is used for cervical cancer screening, typically starting at age 21 and continuing every 3-5 years, not every 10 years after age 50.
Which one of the following is the correct pathway of bile from the hepatocytes to the gallbladder?
- A. bile canaliculus → hepatic duct → common hepatic duct → common bile duct → gallbladder.
- B. bile canaliculus → hepatic duct → cystic duct → common hepatic duct → gallbladder.
- C. hepatic sinusoid → central vein → hepatic vein → gall bladder.
- D. bile canaliculus → hepatic duct → common hepatic duct → cystic duct → gallbladder.
Correct Answer: D
Rationale: The correct answer is D: bile canaliculus → hepatic duct → common hepatic duct → cystic duct → gallbladder. This pathway reflects the anatomical sequence of bile flow from the smallest bile ducts within the liver (bile canaliculi) to the gallbladder. Bile canaliculi collect bile from hepatocytes, which then flows through larger ducts (hepatic duct, common hepatic duct) before reaching the cystic duct, which connects to the gallbladder for bile storage.
Choices A, B, and C are incorrect because they do not follow the correct anatomical pathway of bile flow. For example, in choice A, the common hepatic duct should connect directly to the cystic duct, not the common bile duct. In choice B, the cystic duct should not connect to the common hepatic duct. In choice C, bile does not flow through the central vein or hepatic vein
The nervous system or systems that can control peristalsis in the inferior esophagus, stomach, small intestine and large intestine is (are) the
- A. somatic motor nervous system.
- B. sympathetic nervous system.
- C. sympathetic and parasympathetic nervous systems.
- D. autonomic and somatic motor nervous systems.
Correct Answer: C
Rationale: The correct answer is C because peristalsis, the involuntary movement of the digestive tract, is controlled by both sympathetic and parasympathetic nervous systems. The parasympathetic nervous system stimulates peristalsis, while the sympathetic nervous system inhibits it. Choice A is incorrect because the somatic motor nervous system controls voluntary movements, not peristalsis. Choice B is incorrect because the sympathetic nervous system inhibits peristalsis. Choice D is incorrect because the somatic motor nervous system does not control peristalsis in the digestive tract; it controls skeletal muscle movements.