Cholesterol that is required to produce steroids and bile salts is carried in
- A. micelles.
- B. chylomicrons.
- C. low-density lipoproteins (LDL).
- D. high-density lipoproteins (HDL).
Correct Answer: C
Rationale: The correct answer is C: low-density lipoproteins (LDL). LDL carries cholesterol to tissues where it is needed for steroid synthesis and bile salt production. LDL is known as the "bad" cholesterol transporter because high levels can lead to plaque buildup in arteries. Micelles (A) are small lipid droplets in the intestine, chylomicrons (B) transport dietary fats, and HDL (D) is known as the "good" cholesterol transporter that helps remove excess cholesterol from the bloodstream.
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The aqueous component of pancreatic juice is produced by the
- A. intercalated duct.
- B. pancreatic islets.
- C. acinar cells.
- D. duodenum.
Correct Answer: A
Rationale: The correct answer is A: intercalated duct. The aqueous component of pancreatic juice is produced by intercalated ducts, which are responsible for secreting bicarbonate-rich fluid to neutralize the acidic chyme entering the duodenum. Other choices are incorrect because pancreatic islets (B) secrete hormones like insulin and glucagon, acinar cells (C) secrete digestive enzymes, and the duodenum (D) is the first part of the small intestine where pancreatic juice is delivered but not where it is produced.
Your physician measures your blood pressure as 120/110. What SHOULD be your response?
- A. you're not concerned because the higher of the two numbers is normal
- B. you're concerned because the diastolic number indicates your heart will have to work harder
- C. you're not concerned because these numbers mean nothing in terms of heart function
- D. you're concerned because the systolic number is too low and your cardiac output will decrease
Correct Answer: B
Rationale: The correct answer is B: you're concerned because the diastolic number indicates your heart will have to work harder. This is because the diastolic number (110) represents the pressure in the arteries when the heart is at rest between beats, which should ideally be below 80. A high diastolic pressure indicates increased resistance in the arteries, making the heart work harder to pump blood. The systolic number (120) being within the normal range is not as concerning as the elevated diastolic pressure.
Summary:
- Choice A is incorrect because the diastolic number being high is a cause for concern.
- Choice C is incorrect as blood pressure numbers are crucial indicators of heart function.
- Choice D is incorrect as the systolic number being low is not the primary concern in this case.
Following a hemorrhoidectomy, what should the nurse advise the patient to do?
- A. Use daily laxatives to facilitate bowel emptying.
- B. Use ice packs to the perineum to prevent swelling.
- C. Avoid having a bowel movement for several days until healing occurs.
- D. Take warm sitz baths several times a day to promote comfort and cleaning.
Correct Answer: D
Rationale: Sitz baths help reduce pain and swelling, promote comfort, and support wound healing after a hemorrhoidectomy.
Which of the following is not a part of the digestive system?
- A. Liver
- B. Gallbladder
- C. absorption-neet-mcq/ 8/13 1/17/25, 2:54 PM Digestion and Absorption NEET MCQ 2024
- D. Lungs
Correct Answer: D
Rationale: The correct answer is D: Lungs. The lungs are not a part of the digestive system. The digestive system is responsible for breaking down food into nutrients, absorbing those nutrients, and eliminating waste. The lungs are part of the respiratory system, responsible for gas exchange. Liver (A) and gallbladder (B) are both part of the digestive system, aiding in digestion and nutrient absorption. Absorption (C) is a process within the digestive system, not a separate entity. In summary, the lungs do not play a role in the digestion process, making them the correct answer choice.
The portion of a tooth which lies within the mandible socket is called the _____.
- A. dentin
- B. crown
- C. root
- D. cementum
Correct Answer: C
Rationale: The correct answer is C: root. The root of a tooth is the portion that lies within the mandible socket, anchoring the tooth in place. The root helps support the tooth and allows for the transfer of nutrients. Dentin (A) is the hard tissue beneath the enamel, crown (B) is the visible part of the tooth above the gumline, and cementum (D) covers the root surface but is not the portion within the mandible socket.