Phlebotomy Anatomy and Physiology Flashcards
6 cards from real Phlebotomy Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Phlebotomy Anatomy and Physiology flashcards as text
What is the function of platelets (thrombocytes) in the blood?
Answer: Assist in blood clotting
Platelets are cell fragments that aggregate at sites of vessel injury to form a plug and initiate the clotting cascade to stop bleeding.
Which layer forms the middle portion of centrifuged whole blood between plasma and red blood cells?
Answer: Buffy coat
The buffy coat is the thin white or gray layer that contains white blood cells and platelets, located between the plasma and the packed red blood cells after centrifugation.
A patient has a normal adult hematocrit. Which range best represents this value for males?
Answer: 38–50%
Normal hematocrit for adult males is approximately 41–53%, so the range 38–50% is the closest correct answer among the choices.
Which vein in the antecubital area is considered the least preferred due to its proximity to the brachial artery?
Answer: Basilic
The basilic vein is least preferred because it lies near the brachial artery and median nerve, increasing the risk of accidental arterial puncture or nerve injury.
What type of circulation carries blood from the heart to the lungs and back?
Answer: Pulmonary circulation
Pulmonary circulation transports deoxygenated blood from the right ventricle to the lungs for oxygenation, then returns it to the left atrium.
Which plasma protein is essential for maintaining oncotic pressure and transporting substances in the blood?
Answer: Albumin
Albumin is the most abundant plasma protein and is critical for maintaining osmotic pressure and transporting hormones, fatty acids, and drugs.