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Anatomy and Physiology I MCQs — BS Nursing Semester 1 (Easy to Hard)

Review 15 anatomy and physiology MCQs for nursing students, including body systems and homeostasis, with answers and clear rationales.

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Practice Anatomy and Physiology I MCQs organised for BS Nursing Semester 1 under the PNMC–HEC jointly revised 2024 curriculum. This expanded draft contains 15 original questions: 5 easy, 5 moderate and 5 hard, each with an answer and explanation.

Faculty review pending: These questions are original revision material, not previous PNMC examination questions or an official PNMC test. Faizan’s review of accuracy, alignment and wording is pending. Clinical decisions and procedures require supervision and current local protocols.

Subject scope and curriculum alignment

Semester 1 · 3 credit hours · Anatomy and Physiology I. Musculoskeletal, integumentary, circulatory and digestive systems, plus homeostasis. These question topics are an educational interpretation of the stated curriculum and should be cross-checked with the university course outline.

How to practise

Choose an answer before expanding Reveal correct answer and explanation. Record your score on paper and explain why the distractors are incorrect. This is a self-check question bank; it does not yet include automated scoring, a timer or saved progress.

Easy questions

Recall and correctly identify foundational concepts.

Q1. Which structure forms the outer epithelial layer of the skin?

Easy · Integumentary system

  1. Dermis
  2. Epidermis
  3. Hypodermis
  4. Periosteum
Reveal correct answer and explanation

Correct: B — Epidermis.

The epidermis is the outer skin layer and contributes to its protective barrier.

Further reading: S1 (sources below).

Q2. A tendon primarily connects which structures?

Easy · Musculoskeletal system

  1. Bone to bone
  2. Muscle to bone
  3. Nerve to skin
  4. Artery to vein
Reveal correct answer and explanation

Correct: B — Muscle to bone.

Tendons transmit forces from muscle to bone, enabling movement.

Further reading: S1 (sources below).

Q3. What is the main mechanical role of the heart?

Easy · Circulatory system

  1. Produce bile
  2. Pump blood through pulmonary and systemic circuits
  3. Absorb dietary nutrients
  4. Filter urine
Reveal correct answer and explanation

Correct: B — Pump blood through pulmonary and systemic circuits.

The heart generates the flow needed for blood circulation.

Further reading: S1 (sources below).

Moderate questions

Apply knowledge to a new question or straightforward clinical context.

Q4. When body temperature rises, sweating promotes cooling. This is an example of:

Moderate · Homeostasis

  1. Positive feedback
  2. Negative feedback
  3. Irreversible adaptation
  4. Genetic mutation
Reveal correct answer and explanation

Correct: B — Negative feedback.

Sweating opposes the original rise in temperature, a negative-feedback response.

Further reading: S2 (sources below).

Q5. Where is most nutrient absorption from digested food carried out?

Moderate · Digestive physiology

  1. Oesophagus
  2. Stomach
  3. Small intestine
  4. Large intestine
Reveal correct answer and explanation

Correct: C — Small intestine.

The small intestine is specialised for nutrient digestion and absorption.

Further reading: S3 (sources below).

Q6. Which type of vessel generally carries blood away from the heart?

Moderate · Circulation

  1. Vein
  2. Lymphatic duct
  3. Artery
  4. Capillary
Reveal correct answer and explanation

Correct: C — Artery.

Arteries carry blood away from the heart; oxygen content depends on the circuit.

Further reading: S1 (sources below).

Hard questions

Integrate evidence and decide between plausible alternatives; not an unsupervised treatment protocol.

Q7. A patient has extensive loss of the skin barrier. Which physiological function is most directly threatened?

Hard · Systems reasoning

  1. Mechanical protection and limitation of fluid loss
  2. Red-blood-cell synthesis in bone marrow
  3. Insulin release from the pancreas
  4. Bile formation in the liver
Reveal correct answer and explanation

Correct: A — Mechanical protection and limitation of fluid loss.

The skin barrier protects tissues and reduces excessive water loss; barrier damage also raises infection risk.

Further reading: S1 (sources below).

Q8. A negative-feedback loop fails to restore a variable toward its expected range. Which explanation most directly describes the problem?

Hard · Feedback reasoning

  1. The effector did not adequately oppose the deviation
  2. A receptor never participates in feedback
  3. All feedback mechanisms amplify change
  4. The control centre has no role in physiology
Reveal correct answer and explanation

Correct: A — The effector did not adequately oppose the deviation.

Negative feedback requires sensing, integration and an effective counter-response.

Further reading: S2 (sources below).

Q9. Nutrients absorbed from the small intestine enter blood and are delivered to the liver through which pathway?

Hard · Integrative physiology

  1. The hepatic portal circulation
  2. The pulmonary vein directly
  3. The ureter
  4. The coronary sinus
Reveal correct answer and explanation

Correct: A — The hepatic portal circulation.

The hepatic portal system carries nutrient-rich blood from many digestive organs to the liver before systemic return.

Further reading: S3 (sources below).

Additional topic-based practice — faculty review pending

Q10. Which skin layer forms the outer protective barrier? (Easy)

  1. Dermis
  2. Epidermis
  3. Hypodermis
  4. Periosteum
Reveal answer and explanation

B — Epidermis. The epidermis is the outer epithelial layer; the dermis lies beneath it. HEC 2024 A&P I outcomes.

Q11. What does peristalsis do? (Moderate)

  1. Produce bile
  2. Move gut contents
  3. Filter blood
  4. Store glucose
Reveal answer and explanation

B — Move gut contents. Coordinated smooth-muscle contractions propel material along the digestive tract. See S1.

Q12. When body temperature rises, which response illustrates negative feedback? (Hard)

  1. Sweating promotes heat loss
  2. Shivering increases heat production
  3. Fever always rises further
  4. Digestion stops
Reveal answer and explanation

A — Sweating promotes heat loss. Sweat evaporation removes heat, counteracting the temperature rise.

See references below.

Q13. What structure connects a muscle to a bone? (Easy)

  1. Ligament
  2. Tendon
  3. Cartilage
  4. Epidermis
Reveal answer and explanation

B — Tendon. Tendons connect muscle to bone; ligaments primarily connect bone to bone.

See subject references below.

Q14. Which vessel returns oxygenated blood from the lungs to the heart? (Moderate)

  1. Pulmonary artery
  2. Pulmonary vein
  3. Vena cava
  4. Aorta
Reveal answer and explanation

B — Pulmonary vein. Pulmonary veins return oxygenated blood to the left atrium.

See subject references below.

Q15. During a rise in body temperature, which response demonstrates negative feedback? (Hard)

  1. Sweating promotes heat loss
  2. Shivering raises heat production
  3. Temperature rises without limit
  4. Digestion stops permanently
Reveal answer and explanation

A — Sweating promotes heat loss. Evaporative cooling opposes a rise in body temperature and helps restore balance.

See subject references below.

Sources and curriculum references

  1. S1. 2024 BSN scheme and Anatomy & Physiology I outcomes
  2. S2. OpenStax Anatomy and Physiology: Homeostasis
  3. S3. OpenStax Anatomy and Physiology: Digestive System

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Anatomy: terminology and first principles Semester 1 study guide All nursing practice MCQs

Coverage: 15 questions for this subject form an expanded review draft, not a complete representation of its entire curriculum. Further units and question sets should be expanded after qualified academic review and performance analysis.