NCCT Anatomy and Physiology 1 — Questions and Answers
Question 1: Which vein is most commonly used for routine venipuncture in adults?
- Median cubital vein (Correct answer)
- Cephalic vein
- Basilic vein
- Femoral vein
Correct answer: Median cubital vein
The median cubital vein in the antecubital fossa is preferred because it is large, well-anchored, and least likely to roll.
Question 2: What are the three layers of a blood vessel wall called?
- Tunica intima, tunica media, tunica adventitia (Correct answer)
- Endothelium, myocardium, epicardium
- Epidermis, dermis, hypodermis
- Mucosa, submucosa, serosa
Correct answer: Tunica intima, tunica media, tunica adventitia
Blood vessels are composed of three layers: tunica intima (inner), tunica media (middle), and tunica adventitia (outer).
Question 3: Which chamber of the heart pumps oxygenated blood to the body?
- Left ventricle (Correct answer)
- Right ventricle
- Left atrium
- Right atrium
Correct answer: Left ventricle
The left ventricle pumps oxygenated blood through the aorta to supply the systemic circulation of the body.
Question 4: What is the average adult blood volume?
- 4–6 liters (Correct answer)
- 1–2 liters
- 8–10 liters
- 10–12 liters
Correct answer: 4–6 liters
The average adult has approximately 4–6 liters of blood, comprising about 7–8% of total body weight.
Question 5: Which type of blood vessel carries blood away from the heart?
- Arteries (Correct answer)
- Veins
- Capillaries
- Venules
Correct answer: Arteries
Arteries carry blood away from the heart, while veins return blood to the heart.
Question 6: What is the primary function of red blood cells?
- Transport oxygen via hemoglobin (Correct answer)
- Fight infection
- Initiate blood clotting
- Produce antibodies
Correct answer: Transport oxygen via hemoglobin
Red blood cells (erythrocytes) contain hemoglobin, which binds and transports oxygen from the lungs to body tissues.
NCCT Anatomy and Physiology 1
Which vein is most commonly used for routine venipuncture in adults?