ASPT ASPT Anatomy & Physiology for Phlebotomy

Question 1

Which vein is the preferred first-choice site for venipuncture in the antecubital fossa?

Accepted Answer

Median cubital vein

Answer

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?

Accepted Answer

Transport oxygen and carbon dioxide

Answer

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?

Accepted Answer

Dermis

Answer

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?

Accepted Answer

Inner aspect of the elbow

Answer

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?

Accepted Answer

Thrombocytes

Answer

Thrombocytes (platelets) aggregate at the site of vessel injury to form a platelet plug, initiating the hemostasis process.

(ASPT) American Society of Phlebotomy Technicians Practice Test