NCCT National Certified Phlebotomy Technician General 3

Question 1

What is the primary role of albumin in the blood?

Accepted Answer

Maintaining osmotic pressure and transporting substances

Answer

Albumin is the most abundant plasma protein, responsible for maintaining colloidal osmotic pressure (preventing fluid from leaking out of blood vessels) and transporting various substances.

Question 2

The ABO blood typing system classifies blood based on the presence of which molecules on red blood cell surfaces?

Accepted Answer

Antigen molecules (A and/or B)

Answer

ABO blood types are determined by the presence or absence of A and B antigens on the surface of red blood cells, along with corresponding antibodies in the plasma.

Question 3

What does the term 'hemostasis' refer to?

Accepted Answer

The process of stopping bleeding through blood vessel repair and clot formation

Answer

Hemostasis is the body's physiological process of stopping bleeding at an injury site through vascular constriction, platelet plug formation, and the coagulation cascade.

Question 4

Which part of the circulatory system has the thinnest walls to allow gas and nutrient exchange?

Accepted Answer

Capillaries

Answer

Capillaries have walls only one cell thick (single layer of endothelium), allowing diffusion of oxygen, carbon dioxide, nutrients, and waste products between blood and tissues.

Question 5

What is the normal total white blood cell count range for an adult?

Accepted Answer

4,500 - 11,000 per microliter

Answer

The normal adult WBC count ranges from 4,500 to 11,000 per microliter of blood. Elevated counts may indicate infection, while decreased counts suggest immune compromise.

NCCT - National Certified Phlebotomy Technician Exam Practice Test

NCCT - National Certified Phlebotomy Technician Exam Practice Test

NCCT National Certified Phlebotomy Technician General 3