ASVAB NURSING AND MEDICAL
SUPPORT QUESTIONS, CORRECT
ANSWERS AND HIGHLIGHTED
EXPLANATIONS 2026
1. Which body system is primarily responsible for transporting oxygen and nutrients
throughout the body?
A. Respiratory system
B. Digestive system
C. Circulatory system
D. Nervous system
Correct Answer: C
Explanation: The circulatory system transports oxygen, nutrients, hormones, and wastes
through the blood. The respiratory system exchanges gases, the digestive system processes
food, and the nervous system controls body activities.
2. A nurse assistant measures a patient’s pulse and counts 110 beats per minute in an
adult at rest. This condition is known as:
A. Bradycardia
B. Tachycardia
C. Hypertension
D. Hypothermia
Correct Answer: B
Explanation: Tachycardia refers to an abnormally fast heart rate above 100 beats per minute
in adults. Bradycardia means a slow heart rate, hypertension is high blood pressure, and
hypothermia is low body temperature.
3. Which organ is responsible for filtering waste products from the blood?
A. Liver
B. Heart
C. Kidneys
D. Pancreas
Correct Answer: C
,Explanation: The kidneys filter blood to remove waste and excess fluids, producing urine.
The liver detoxifies chemicals, the heart pumps blood, and the pancreas regulates blood
sugar.
4. A patient has difficulty breathing due to narrowing of the airways. Which condition is
most likely present?
A. Diabetes mellitus
B. Asthma
C. Arthritis
D. Anemia
Correct Answer: B
Explanation: Asthma causes inflammation and narrowing of airways, leading to breathing
difficulty. Diabetes affects blood sugar, arthritis affects joints, and anemia involves low red
blood cells.
5. What is the normal average body temperature in humans?
A. 35°C (95°F)
B. 36°C (96.8°F)
C. 37°C (98.6°F)
D. 39°C (102.2°F)
Correct Answer: C
Explanation: The average normal body temperature is approximately 37°C (98.6°F).
Temperatures significantly above or below this may indicate illness.
6. Which blood type is considered the universal donor?
A. AB positive
B. O negative
C. A positive
D. B negative
Correct Answer: B
Explanation: O negative blood lacks A, B, and Rh antigens, making it compatible with most
recipients. AB positive is considered the universal recipient.
7. Which vitamin is mainly produced when skin is exposed to sunlight?
A. Vitamin A
B. Vitamin C
, C. Vitamin D
D. Vitamin K
Correct Answer: C
Explanation: Vitamin D is synthesized in the skin through sunlight exposure. It helps regulate
calcium and maintain strong bones.
8. A medical support specialist notices a patient’s blood pressure is 150/95 mmHg. This
reading indicates:
A. Hypotension
B. Normal blood pressure
C. Hypertension
D. Cardiac arrest
Correct Answer: C
Explanation: Blood pressure above normal levels indicates hypertension. Hypotension refers
to low blood pressure, while cardiac arrest is cessation of heart function.
9. Which part of the brain controls balance and coordination?
A. Cerebrum
B. Cerebellum
C. Brainstem
D. Hypothalamus
Correct Answer: B
Explanation: The cerebellum coordinates movement, posture, and balance. The cerebrum
controls higher thinking, while the brainstem regulates vital functions.
10. What is the primary function of red blood cells?
A. Fight infection
B. Produce hormones
C. Carry oxygen
D. Form blood clots
Correct Answer: C
Explanation: Red blood cells contain hemoglobin, which carries oxygen throughout the body.
White blood cells fight infection, while platelets help clot blood.
, 11. Which medical instrument is used to measure blood pressure?
A. Thermometer
B. Stethoscope
C. Sphygmomanometer
D. Otoscope
Correct Answer: C
Explanation: A sphygmomanometer measures blood pressure. A thermometer measures
temperature, a stethoscope listens to body sounds, and an otoscope examines the ear.
12. A patient with low hemoglobin levels is most likely suffering from:
A. Leukemia
B. Pneumonia
C. Anemia
D. Hypertension
Correct Answer: C
Explanation: Anemia occurs when hemoglobin or red blood cell levels are low, reducing
oxygen delivery to tissues.
13. Which nutrient is the body’s main source of energy?
A. Proteins
B. Vitamins
C. Carbohydrates
D. Minerals
Correct Answer: C
Explanation: Carbohydrates are the body’s primary energy source. Proteins mainly build
and repair tissues.
14. The medical term “cyanosis” refers to:
A. Yellowing of the skin
B. Bluish discoloration of the skin
C. Red inflammation of joints
D. Excessive sweating
Correct Answer: B
Explanation: Cyanosis is a bluish tint caused by inadequate oxygen in the blood. Jaundice
causes yellowing of the skin.
SUPPORT QUESTIONS, CORRECT
ANSWERS AND HIGHLIGHTED
EXPLANATIONS 2026
1. Which body system is primarily responsible for transporting oxygen and nutrients
throughout the body?
A. Respiratory system
B. Digestive system
C. Circulatory system
D. Nervous system
Correct Answer: C
Explanation: The circulatory system transports oxygen, nutrients, hormones, and wastes
through the blood. The respiratory system exchanges gases, the digestive system processes
food, and the nervous system controls body activities.
2. A nurse assistant measures a patient’s pulse and counts 110 beats per minute in an
adult at rest. This condition is known as:
A. Bradycardia
B. Tachycardia
C. Hypertension
D. Hypothermia
Correct Answer: B
Explanation: Tachycardia refers to an abnormally fast heart rate above 100 beats per minute
in adults. Bradycardia means a slow heart rate, hypertension is high blood pressure, and
hypothermia is low body temperature.
3. Which organ is responsible for filtering waste products from the blood?
A. Liver
B. Heart
C. Kidneys
D. Pancreas
Correct Answer: C
,Explanation: The kidneys filter blood to remove waste and excess fluids, producing urine.
The liver detoxifies chemicals, the heart pumps blood, and the pancreas regulates blood
sugar.
4. A patient has difficulty breathing due to narrowing of the airways. Which condition is
most likely present?
A. Diabetes mellitus
B. Asthma
C. Arthritis
D. Anemia
Correct Answer: B
Explanation: Asthma causes inflammation and narrowing of airways, leading to breathing
difficulty. Diabetes affects blood sugar, arthritis affects joints, and anemia involves low red
blood cells.
5. What is the normal average body temperature in humans?
A. 35°C (95°F)
B. 36°C (96.8°F)
C. 37°C (98.6°F)
D. 39°C (102.2°F)
Correct Answer: C
Explanation: The average normal body temperature is approximately 37°C (98.6°F).
Temperatures significantly above or below this may indicate illness.
6. Which blood type is considered the universal donor?
A. AB positive
B. O negative
C. A positive
D. B negative
Correct Answer: B
Explanation: O negative blood lacks A, B, and Rh antigens, making it compatible with most
recipients. AB positive is considered the universal recipient.
7. Which vitamin is mainly produced when skin is exposed to sunlight?
A. Vitamin A
B. Vitamin C
, C. Vitamin D
D. Vitamin K
Correct Answer: C
Explanation: Vitamin D is synthesized in the skin through sunlight exposure. It helps regulate
calcium and maintain strong bones.
8. A medical support specialist notices a patient’s blood pressure is 150/95 mmHg. This
reading indicates:
A. Hypotension
B. Normal blood pressure
C. Hypertension
D. Cardiac arrest
Correct Answer: C
Explanation: Blood pressure above normal levels indicates hypertension. Hypotension refers
to low blood pressure, while cardiac arrest is cessation of heart function.
9. Which part of the brain controls balance and coordination?
A. Cerebrum
B. Cerebellum
C. Brainstem
D. Hypothalamus
Correct Answer: B
Explanation: The cerebellum coordinates movement, posture, and balance. The cerebrum
controls higher thinking, while the brainstem regulates vital functions.
10. What is the primary function of red blood cells?
A. Fight infection
B. Produce hormones
C. Carry oxygen
D. Form blood clots
Correct Answer: C
Explanation: Red blood cells contain hemoglobin, which carries oxygen throughout the body.
White blood cells fight infection, while platelets help clot blood.
, 11. Which medical instrument is used to measure blood pressure?
A. Thermometer
B. Stethoscope
C. Sphygmomanometer
D. Otoscope
Correct Answer: C
Explanation: A sphygmomanometer measures blood pressure. A thermometer measures
temperature, a stethoscope listens to body sounds, and an otoscope examines the ear.
12. A patient with low hemoglobin levels is most likely suffering from:
A. Leukemia
B. Pneumonia
C. Anemia
D. Hypertension
Correct Answer: C
Explanation: Anemia occurs when hemoglobin or red blood cell levels are low, reducing
oxygen delivery to tissues.
13. Which nutrient is the body’s main source of energy?
A. Proteins
B. Vitamins
C. Carbohydrates
D. Minerals
Correct Answer: C
Explanation: Carbohydrates are the body’s primary energy source. Proteins mainly build
and repair tissues.
14. The medical term “cyanosis” refers to:
A. Yellowing of the skin
B. Bluish discoloration of the skin
C. Red inflammation of joints
D. Excessive sweating
Correct Answer: B
Explanation: Cyanosis is a bluish tint caused by inadequate oxygen in the blood. Jaundice
causes yellowing of the skin.
