PHLEBOTOMY NATIONAL EXAM (NHA)
Exam QUESTIONS VERIFIED ANSWERS
LATEST UPDATE 2025/2026 RATED A+
Characteristics imperative to a phlebotomist - CORRECT ANSWERS Dependability, honesty,
integrity, empathy and compassion, professional appearance, interpersonal skills
Circulatory system function - CORRECT ANSWERS deliver oxygen, nutrients, hormones, &
enzymes to cells and transport cellular waste (CO2) to organs where they can be expelled
The two circulations - CORRECT ANSWERS Pulmonary & Systemic
Pulmonary circulation - CORRECT ANSWERS carries deoxygenated blood from the right
ventricle to the lungs and returns oxygenated blood from lungs to left atrium
Where does oxygenation take place in the lungs? - CORRECT ANSWERS alveoli
Systemic circulation - CORRECT ANSWERS carries oxygenated blood from left ventricle
throughout the body
Upper chambers of the heart - CORRECT ANSWERS right and left atria
lower chambers of the heart - CORRECT ANSWERS right and left ventricle
tricuspid valve - CORRECT ANSWERS atrioventricular valve, situated between right atrium and
right ventricle
**to remember this valve is on the right side of the heart-- people TRY to be RIGHT
,pulmonic valve - CORRECT ANSWERS semi-lunar valve situated between the right ventricle and
the pulmonary artery
Mitral valve (or bicuspid) - CORRECT ANSWERS atrioventricular valve located between the left
atrium and left ventricle
aortic valve - CORRECT ANSWERS semi lunar valve situated between the left ventricle and
aorta
Flow of blood through the heart - CORRECT ANSWERS Superior and Inferior Vena Cavae< Right
atrium< tricuspid valve< right ventricle< pulmonic valve< pulmonary artery< lungs< pulmonary vein< left
atrium< mitral (bicuspid) valve< left ventricle< aorta< rest of body
Three layers of the heart - CORRECT ANSWERS Endocardium, myocardium, epicardium
Blood vessels - CORRECT ANSWERS arteries, arterioles, capillaries, venules, veins, superior &
inferior vena cavae
aorta, arteries, and arterioles carry_____ blood _______ the heart - CORRECT ANSWERS
oxygenated & away from
venules, veins, and superior and inferior vena cave carry _____ blood ________ the heart - CORRECT
ANSWERS deoxygenated & back to
The average adult has ______ liters of blood - CORRECT ANSWERS 5-6
Plasma comprises how much of circulating blood? - CORRECT ANSWERS 55%
, Plasma contains.... - CORRECT ANSWERS proteins, amino acids, gases, electrolytes, sugars,
hormones, minerals, vitamins, and water
What percent of plasma is water? - CORRECT ANSWERS 92%
Formed elements comprise what percent of circulating blood? - CORRECT ANSWERS 45%
another name for red blood cells... - CORRECT ANSWERS Erythrocytes
What makes up the formed elements? - CORRECT ANSWERS Red blood cells, White blood
cells, and platelets
Another name for white blood cells... - CORRECT ANSWERS leukocytes
another name for platelets... - CORRECT ANSWERS thrombocytes
What comprises 99% of the formed elements? - CORRECT ANSWERS red blood cells
(erythrocytes)
Where do blood cells originate? - CORRECT ANSWERS stem cells in bone marrow
How many RBCs are in a microliter of blood? - CORRECT ANSWERS 4.2 to 6.2 million
Normal life span of an RBS is... - CORRECT ANSWERS 120 days
Function of a leukocyte - CORRECT ANSWERS provide the body protection against infection
Exam QUESTIONS VERIFIED ANSWERS
LATEST UPDATE 2025/2026 RATED A+
Characteristics imperative to a phlebotomist - CORRECT ANSWERS Dependability, honesty,
integrity, empathy and compassion, professional appearance, interpersonal skills
Circulatory system function - CORRECT ANSWERS deliver oxygen, nutrients, hormones, &
enzymes to cells and transport cellular waste (CO2) to organs where they can be expelled
The two circulations - CORRECT ANSWERS Pulmonary & Systemic
Pulmonary circulation - CORRECT ANSWERS carries deoxygenated blood from the right
ventricle to the lungs and returns oxygenated blood from lungs to left atrium
Where does oxygenation take place in the lungs? - CORRECT ANSWERS alveoli
Systemic circulation - CORRECT ANSWERS carries oxygenated blood from left ventricle
throughout the body
Upper chambers of the heart - CORRECT ANSWERS right and left atria
lower chambers of the heart - CORRECT ANSWERS right and left ventricle
tricuspid valve - CORRECT ANSWERS atrioventricular valve, situated between right atrium and
right ventricle
**to remember this valve is on the right side of the heart-- people TRY to be RIGHT
,pulmonic valve - CORRECT ANSWERS semi-lunar valve situated between the right ventricle and
the pulmonary artery
Mitral valve (or bicuspid) - CORRECT ANSWERS atrioventricular valve located between the left
atrium and left ventricle
aortic valve - CORRECT ANSWERS semi lunar valve situated between the left ventricle and
aorta
Flow of blood through the heart - CORRECT ANSWERS Superior and Inferior Vena Cavae< Right
atrium< tricuspid valve< right ventricle< pulmonic valve< pulmonary artery< lungs< pulmonary vein< left
atrium< mitral (bicuspid) valve< left ventricle< aorta< rest of body
Three layers of the heart - CORRECT ANSWERS Endocardium, myocardium, epicardium
Blood vessels - CORRECT ANSWERS arteries, arterioles, capillaries, venules, veins, superior &
inferior vena cavae
aorta, arteries, and arterioles carry_____ blood _______ the heart - CORRECT ANSWERS
oxygenated & away from
venules, veins, and superior and inferior vena cave carry _____ blood ________ the heart - CORRECT
ANSWERS deoxygenated & back to
The average adult has ______ liters of blood - CORRECT ANSWERS 5-6
Plasma comprises how much of circulating blood? - CORRECT ANSWERS 55%
, Plasma contains.... - CORRECT ANSWERS proteins, amino acids, gases, electrolytes, sugars,
hormones, minerals, vitamins, and water
What percent of plasma is water? - CORRECT ANSWERS 92%
Formed elements comprise what percent of circulating blood? - CORRECT ANSWERS 45%
another name for red blood cells... - CORRECT ANSWERS Erythrocytes
What makes up the formed elements? - CORRECT ANSWERS Red blood cells, White blood
cells, and platelets
Another name for white blood cells... - CORRECT ANSWERS leukocytes
another name for platelets... - CORRECT ANSWERS thrombocytes
What comprises 99% of the formed elements? - CORRECT ANSWERS red blood cells
(erythrocytes)
Where do blood cells originate? - CORRECT ANSWERS stem cells in bone marrow
How many RBCs are in a microliter of blood? - CORRECT ANSWERS 4.2 to 6.2 million
Normal life span of an RBS is... - CORRECT ANSWERS 120 days
Function of a leukocyte - CORRECT ANSWERS provide the body protection against infection
