ASPT ASPT Anatomy & Physiology for Phlebotomy 1 — Questions and Answers
Question 1: Which vein is the preferred first-choice site for venipuncture in the antecubital fossa?
- Cephalic vein
- Median cubital vein (Correct answer)
- Basilic vein
- Radial vein
Correct answer: Median cubital vein
The median cubital vein is the preferred first-choice venipuncture site because it is large, well-anchored, and poses less risk of arterial puncture.
Question 2: What is the function of erythrocytes in the blood?
- Fight infection
- Transport oxygen and carbon dioxide (Correct answer)
- Promote clotting
- Produce antibodies
Correct answer: Transport oxygen and carbon dioxide
Erythrocytes (red blood cells) contain hemoglobin, which carries oxygen to tissues and carbon dioxide back to the lungs.
Question 3: Which layer of the skin contains blood vessels and nerves relevant to venipuncture depth?
- Epidermis
- Subcutaneous tissue
- Dermis (Correct answer)
- Hypodermis
Correct answer: Dermis
The dermis contains blood vessels, nerve endings, and connective tissue, making it the layer most relevant to needle depth during venipuncture.
Question 4: The antecubital fossa is located at which anatomical position?
- Back of the knee
- Inner aspect of the elbow (Correct answer)
- Inner wrist
- Back of the hand
Correct answer: Inner aspect of the elbow
The antecubital fossa is the triangular depression on the anterior (inner) surface of the elbow, housing the primary venipuncture veins.
Question 5: Which blood component is primarily responsible for hemostasis and forming a platelet plug?
- Erythrocytes
- Leukocytes
- Thrombocytes (Correct answer)
- Plasma proteins
Correct answer: Thrombocytes
Thrombocytes (platelets) aggregate at the site of vessel injury to form a platelet plug, initiating the hemostasis process.
Question 6: What is the normal adult range for hemoglobin in a male patient?
- 8–10 g/dL
- 12–14 g/dL
- 13.5–17.5 g/dL (Correct answer)
- 18–22 g/dL
Correct answer: 13.5–17.5 g/dL
The normal hemoglobin range for adult males is approximately 13.5–17.5 g/dL, reflecting adequate red blood cell oxygen-carrying capacity.
ASPT ASPT Anatomy & Physiology for Phlebotomy 1
Which vein is the preferred first-choice site for venipuncture in the antecubital fossa?