Certified Phlebotomy Technician Exam Anatomy and Physiology 2

Question 1

The cephalic vein runs along which side of the forearm and is considered the second choice for venipuncture?

Accepted Answer

Lateral (outer/thumb) side

Answer

The cephalic vein runs along the lateral (radial/thumb) side of the forearm and upper arm, making it accessible and the second preferred venipuncture site after the median cubital.

Question 2

What is the primary function of erythrocytes (red blood cells)?

Accepted Answer

Transporting oxygen and carbon dioxide

Answer

Erythrocytes contain hemoglobin, which binds oxygen in the lungs and releases it to body tissues, while also transporting carbon dioxide back to the lungs for exhalation.

Question 3

Which artery is the preferred site for arterial blood gas (ABG) collection due to good collateral circulation?

Accepted Answer

Radial artery

Answer

The radial artery at the wrist is the first choice for ABG collection because it is superficial, easily palpated, and the ulnar artery provides collateral circulation if the radial artery is compromised.

Question 4

Which blood component is primarily responsible for hemostasis by forming a platelet plug at the site of vessel injury?

Accepted Answer

Thrombocytes (platelets)

Answer

Thrombocytes (platelets) are small, anucleate cell fragments that adhere to damaged vessel walls and aggregate to form a platelet plug, initiating the primary stage of hemostasis.

Question 5

What is the normal adult male reference range for red blood cell (RBC) count?

Accepted Answer

4.5–5.5 million/µL

Answer

The normal adult male RBC count ranges from approximately 4.5 to 5.5 million cells per microliter, slightly higher than the female reference range of 4.0–5.0 million/µL.

Certified Phlebotomy Technician Exam Practice Test

Certified Phlebotomy Technician Exam Practice Test

Certified Phlebotomy Technician Exam Anatomy and Physiology 2