Healthcare Fundamentals Set 285 MCQs
Practice 15 questions with answers and concise explanations for General Medical revision.
15
General Medical
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Active recall
How to use: Try each question first. Open the answer only after choosing an option. Revisit the questions you miss.
Q1. The normal pacemaker of the heart is the:
- SA node
- AV node
- Bundle of His
- Purkinje fibers
Show answer & explanation
Correct answer: A. SA node
The sinoatrial node normally initiates the heartbeat and acts as the primary cardiac pacemaker.
Q2. Which organ produces bile?
- Liver
- Pancreas
- Kidney
- Spleen
Show answer & explanation
Correct answer: A. Liver
Bile is produced by hepatocytes in the liver and stored and concentrated in the gallbladder.
Q3. Most nutrient absorption occurs in the:
- Small intestine
- Esophagus
- Large intestine
- Stomach
Show answer & explanation
Correct answer: A. Small intestine
The small intestine is the major site for digestion and absorption of nutrients.
Q4. Which cell type mainly transports oxygen in blood?
- Red blood cell
- Neutrophil
- Platelet
- Lymphocyte
Show answer & explanation
Correct answer: A. Red blood cell
Red blood cells contain hemoglobin and are specialized for oxygen transport.
Q5. Which blood cells are central to immune defense?
- White blood cells
- Red blood cells
- Platelets
- Reticulocytes
Show answer & explanation
Correct answer: A. White blood cells
White blood cells include several cell types that participate in immune defense.
Q6. The largest organ of the human body is the:
- Skin
- Liver
- Brain
- Lung
Show answer & explanation
Correct answer: A. Skin
The skin is the largest organ of the human body by surface area and mass.
Q7. How many pairs of cranial nerves are normally described?
- 10
- 11
- 12
- 13
Show answer & explanation
Correct answer: C. 12
Twelve pairs of cranial nerves are classically described.
Q8. A normal human somatic cell usually contains how many chromosomes?
- 23
- 44
- 46
- 48
Show answer & explanation
Correct answer: C. 46
Human somatic cells normally contain 46 chromosomes arranged in 23 pairs.
Q9. In DNA, adenine pairs with:
- Thymine
- Guanine
- Cytosine
- Uracil
Show answer & explanation
Correct answer: A. Thymine
In double-stranded DNA, adenine pairs with thymine through hydrogen bonding.
Q10. In DNA, guanine pairs with:
- Cytosine
- Thymine
- Adenine
- Uracil
Show answer & explanation
Correct answer: A. Cytosine
In double-stranded DNA, guanine pairs with cytosine.
Q11. Hydrochloric acid in the stomach is secreted mainly by:
- Parietal cells
- Chief cells
- Goblet cells
- Kupffer cells
Show answer & explanation
Correct answer: A. Parietal cells
Gastric parietal cells secrete hydrochloric acid and intrinsic factor.
Q12. Steam under pressure is the principle used in:
- Autoclaving
- Dry heat oven only
- Filtration
- Radiography
Show answer & explanation
Correct answer: A. Autoclaving
Autoclaving uses saturated steam under pressure to achieve sterilization.
Q13. Sterile technique is primarily intended to:
- Reduce microbial contamination
- Increase drug absorption
- Increase blood pressure
- Change blood group
Show answer & explanation
Correct answer: A. Reduce microbial contamination
Sterile technique is used to prevent or minimize microbial contamination of sterile fields and materials.
Q14. Urine is formed primarily in the:
- Kidneys
- Liver
- Spleen
- Pancreas
Show answer & explanation
Correct answer: A. Kidneys
The kidneys filter blood and form urine through nephron processes.
Q15. Insulin generally acts to:
- Lower blood glucose
- Increase blood glucose
- Stop oxygen transport
- Produce bile
Show answer & explanation
Correct answer: A. Lower blood glucose
Insulin promotes glucose uptake and storage and generally lowers blood glucose concentration.
How to Revise This Set
Attempt all 15 questions once without checking answers. Review only the questions you missed, then repeat those in your next revision round.
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How to Use This MCQ Set for Revision
Attempt the questions once without looking at the explanations. Mark the items you were unsure about, then review the supplied explanation for each answer and repeat only those marked questions. On the next revision, mix the difficult questions back into the full set instead of memorising answer positions.
Use the set as active recall: answer first, check second, and note the concept behind every mistake. A short second attempt after a gap is more useful than repeatedly reading the same explanation. Keep your revision focused on the facts and explanations already provided in this page.
