Nokea
Which part of the digestive system absorbs most of the vitamins and minerals?
- A. small intestine
- B. large intestine
- C. mouth
- D. esophagus
Correct Answer: A
Rationale: The small intestine is the correct answer because it is the primary site for nutrient absorption, including vitamins and minerals. It has a large surface area thanks to villi and microvilli, facilitating absorption. The large intestine mainly absorbs water and electrolytes, not vitamins and minerals. The mouth and esophagus are not involved in nutrient absorption but rather in the initial stages of digestion and transportation of food.
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Priority Decision: In instituting a bowel training program for a patient with fecal incontinence, what should the nurse first plan to do?
- A. Teach the patient to use a perianal pouch.
- B. Insert a rectal suppository at the same time every morning.
- C. Place the patient on a bedpan 30 minutes before breakfast.
- D. Assist the patient to the bathroom at the time of the patient's normal defecation.
Correct Answer: D
Rationale: The correct answer is D because assisting the patient to the bathroom at the time of their normal defecation helps establish a routine for bowel movements, which is crucial in bowel training. This step maximizes the chances of success by utilizing the body's natural cues. Teaching the patient to use a perianal pouch (A) does not address the underlying issue of incontinence. Inserting a rectal suppository (B) may provide temporary relief but does not promote long-term bowel control. Placing the patient on a bedpan (C) at a specific time does not actively involve the patient in the process of bowel training.
This region of the large intestine has a simple columnar epithelium in its tunica mucosa, smooth muscle in its tunica muscularis, and epiploic appendages attach to its outer surface. This region is called the
- A. cecum.
- B. colon.
- C. rectum.
- D. anal canal.
Correct Answer: B
Rationale: The correct answer is B: colon. The colon is characterized by having a simple columnar epithelium in its tunica mucosa, smooth muscle in its tunica muscularis, and epiploic appendages attached to its outer surface. The cecum (A) is a pouch-like structure at the beginning of the large intestine. The rectum (C) is the final segment of the large intestine before the anal canal (D). The anal canal is lined by stratified squamous epithelium, not simple columnar epithelium like the colon.
Mumps is inflammation of the ______ salivary gland caused by a virus.
- A. buccal
- B. sublingual
- C. submandibular
- D. parotid
Correct Answer: D
Rationale: The correct answer is D: parotid. Mumps is inflammation of the parotid salivary gland. The parotid gland is the largest salivary gland located near the ear. It is commonly affected by the mumps virus, causing swelling and pain.
Rationale:
1. The parotid gland is the main salivary gland affected by the mumps virus.
2. The other choices, buccal, sublingual, and submandibular glands, are not typically associated with mumps.
3. Understanding the anatomical location and function of the salivary glands helps in identifying the correct answer.
Mucosal necrosis is an essential part of:
- A. blind loop syndrome
- B. pseudomembranous enterocolitis
- C. both
- D. neither
Correct Answer: B
Rationale: The correct answer is B: pseudomembranous enterocolitis. Mucosal necrosis is a key characteristic of pseudomembranous enterocolitis, a condition caused by Clostridium difficile infection. The bacteria release toxins that lead to inflammation and damage to the mucosal lining of the intestines, resulting in mucosal necrosis. Blind loop syndrome (choice A) does not specifically involve mucosal necrosis, while pseudomembranous enterocolitis (choice B) does. Choice C is incorrect because only pseudomembranous enterocolitis involves mucosal necrosis. Choice D is incorrect as pseudomembranous enterocolitis does involve mucosal necrosis.
The nurse caring for an 80-year-old woman who is undergoing the extensive bowel preparation for a colonoscopy. The nurse should most closely monitor the patient for which potential complication?
- A. Diarrhea
- B. Metabolic acidosis
- C. Fatigue
- D. Dyspnea
Correct Answer: B
Rationale: The correct answer is B: Metabolic acidosis. During bowel preparation for a colonoscopy, the patient may experience electrolyte imbalances due to fluid loss from diarrhea and bowel cleansing agents. This can lead to metabolic acidosis, characterized by low pH and bicarbonate levels in the blood. The nurse should monitor for signs such as confusion, weakness, and rapid breathing. Diarrhea (A) is a common side effect of bowel preparation but is not the most critical complication to monitor. Fatigue (C) and dyspnea (D) are not directly related to the electrolyte imbalances that can lead to metabolic acidosis in this scenario.