NGR6200 EXAM 3 QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES Q&A |INSTANT DOWNLOAD PDF
1. Which structure is primarily responsible for gas exchange in
the lungs?
A. Bronchi
B. Bronchioles
C. Alveoli
D. Trachea
Correct Answer: C. Alveoli
Rationale: Alveoli are tiny air sacs with thin walls surrounded
by capillaries where oxygen and carbon dioxide exchange
occurs.
2. Which cranial nerve is responsible for the sense of smell?
A. Cranial nerve I
B. Cranial nerve II
C. Cranial nerve V
D. Cranial nerve VIII
Correct Answer: A. Cranial nerve I
Rationale: Cranial nerve I, the olfactory nerve, transmits smell
information from the nose to the brain.
,3. Which electrolyte imbalance is most associated with cardiac
arrhythmias?
A. Hypernatremia
B. Hypokalemia
C. Hypermagnesemia
D. Hypocalcemia
Correct Answer: B. Hypokalemia
Rationale: Potassium plays a key role in cardiac conduction;
low levels increase the risk of arrhythmias.
4. The normal adult resting heart rate is:
A. 40–60 bpm
B. 60–100 bpm
C. 100–120 bpm
D. 120–140 bpm
Correct Answer: B. 60–100 bpm
Rationale: A normal resting heart rate for adults typically
ranges from 60 to 100 beats per minute.
5. Which assessment technique uses tapping on the body to
evaluate underlying structures?
A. Inspection
B. Palpation
,C. Percussion
D. Auscultation
Correct Answer: C. Percussion
Rationale: Percussion helps determine the density of
underlying tissues such as lungs or abdomen.
6. Which condition is characterized by chronic airway
inflammation and reversible bronchoconstriction?
A. COPD
B. Asthma
C. Pneumonia
D. Tuberculosis
Correct Answer: B. Asthma
Rationale: Asthma involves airway inflammation and bronchial
hyperresponsiveness causing reversible obstruction.
7. Which hormone regulates blood glucose levels by lowering
them?
A. Glucagon
B. Cortisol
C. Insulin
D. Epinephrine
, Correct Answer: C. Insulin
Rationale: Insulin promotes glucose uptake into cells, thereby
lowering blood glucose levels.
8. Which lung sound is described as high-pitched and musical?
A. Crackles
B. Wheezes
C. Rhonchi
D. Pleural rub
Correct Answer: B. Wheezes
Rationale: Wheezes occur when air flows through narrowed
airways.
9. The Glasgow Coma Scale assesses:
A. Pain tolerance
B. Level of consciousness
C. Muscle strength
D. Vision
Correct Answer: B. Level of consciousness
Rationale: The GCS evaluates eye opening, verbal response,
and motor response.
10. Which chamber of the heart pumps oxygenated blood to
the body?
ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES Q&A |INSTANT DOWNLOAD PDF
1. Which structure is primarily responsible for gas exchange in
the lungs?
A. Bronchi
B. Bronchioles
C. Alveoli
D. Trachea
Correct Answer: C. Alveoli
Rationale: Alveoli are tiny air sacs with thin walls surrounded
by capillaries where oxygen and carbon dioxide exchange
occurs.
2. Which cranial nerve is responsible for the sense of smell?
A. Cranial nerve I
B. Cranial nerve II
C. Cranial nerve V
D. Cranial nerve VIII
Correct Answer: A. Cranial nerve I
Rationale: Cranial nerve I, the olfactory nerve, transmits smell
information from the nose to the brain.
,3. Which electrolyte imbalance is most associated with cardiac
arrhythmias?
A. Hypernatremia
B. Hypokalemia
C. Hypermagnesemia
D. Hypocalcemia
Correct Answer: B. Hypokalemia
Rationale: Potassium plays a key role in cardiac conduction;
low levels increase the risk of arrhythmias.
4. The normal adult resting heart rate is:
A. 40–60 bpm
B. 60–100 bpm
C. 100–120 bpm
D. 120–140 bpm
Correct Answer: B. 60–100 bpm
Rationale: A normal resting heart rate for adults typically
ranges from 60 to 100 beats per minute.
5. Which assessment technique uses tapping on the body to
evaluate underlying structures?
A. Inspection
B. Palpation
,C. Percussion
D. Auscultation
Correct Answer: C. Percussion
Rationale: Percussion helps determine the density of
underlying tissues such as lungs or abdomen.
6. Which condition is characterized by chronic airway
inflammation and reversible bronchoconstriction?
A. COPD
B. Asthma
C. Pneumonia
D. Tuberculosis
Correct Answer: B. Asthma
Rationale: Asthma involves airway inflammation and bronchial
hyperresponsiveness causing reversible obstruction.
7. Which hormone regulates blood glucose levels by lowering
them?
A. Glucagon
B. Cortisol
C. Insulin
D. Epinephrine
, Correct Answer: C. Insulin
Rationale: Insulin promotes glucose uptake into cells, thereby
lowering blood glucose levels.
8. Which lung sound is described as high-pitched and musical?
A. Crackles
B. Wheezes
C. Rhonchi
D. Pleural rub
Correct Answer: B. Wheezes
Rationale: Wheezes occur when air flows through narrowed
airways.
9. The Glasgow Coma Scale assesses:
A. Pain tolerance
B. Level of consciousness
C. Muscle strength
D. Vision
Correct Answer: B. Level of consciousness
Rationale: The GCS evaluates eye opening, verbal response,
and motor response.
10. Which chamber of the heart pumps oxygenated blood to
the body?
