Anatomy and Physiology Flashcards
7 cards from real Certified Phlebotomy Technician Exam practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Anatomy and Physiology flashcards as text
The cephalic vein runs along which side of the forearm and is considered the second choice for venipuncture?
Answer: Lateral (outer/thumb) side
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.
What is the primary function of erythrocytes (red blood cells)?
Answer: Transporting oxygen and carbon dioxide
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.
Which artery is the preferred site for arterial blood gas (ABG) collection due to good collateral circulation?
Answer: Radial artery
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.
Which blood component is primarily responsible for hemostasis by forming a platelet plug at the site of vessel injury?
Answer: Thrombocytes (platelets)
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.
What is the normal adult male reference range for red blood cell (RBC) count?
Answer: 4.5–5.5 million/µL
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.
The basilic vein is the third choice for routine venipuncture and is located on which side of the arm?
Answer: Medial (inner/pinky) side
The basilic vein runs along the medial (ulnar/pinky) side of the forearm and is the third choice for venipuncture because it lies in close proximity to the brachial artery and median nerve, increasing risk of injury.
What is the primary function of leukocytes (white blood cells)?
Answer: Immune defense against pathogens and foreign substances
Leukocytes are the cellular components of the immune system, identifying and destroying pathogens, foreign particles, and abnormal cells to protect the body from disease.