PHLEBOTOMY NATIONAL
EXAM (NHA) Comprehensive
Questions and Solutions
Graded A+
Characteristics imperative to a phlebotomist - Answer: Dependability, honesty, integrity,
empathy and compassion, professional appearance, interpersonal skills
Circulatory system function - Answer: deliver oxygen, nutrients, hormones, & enzymes to cells
and transport cellular waste (CO2) to organs where they can be expelled
The two circulations - Answer: Pulmonary & Systemic
Pulmonary circulation - Answer: 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? - Answer: alveoli
Systemic circulation - Answer: carries oxygenated blood from left ventricle throughout the body
Upper chambers of the heart - Answer: right and left atria
lower chambers of the heart - Answer: right and left ventricle
,tricuspid valve - Answer: 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 - Answer: semi-lunar valve situated between the right ventricle and the
pulmonary artery
Mitral valve (or bicuspid) - Answer: atrioventricular valve located between the left atrium and
left ventricle
aortic valve - Answer: semi lunar valve situated between the left ventricle and aorta
Flow of blood through the heart - Answer: 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 - Answer: Endocardium, myocardium, epicardium
Blood vessels - Answer: arteries, arterioles, capillaries, venules, veins, superior & inferior vena
cavae
aorta, arteries, and arterioles carry_____ blood _______ the heart - Answer: oxygenated &
away from
venules, veins, and superior and inferior vena cave carry _____ blood ________ the heart -
Answer: deoxygenated & back to
The average adult has ______ liters of blood - Answer: 5-6
, Plasma comprises how much of circulating blood? - Answer: 55%
Plasma contains.... - Answer: proteins, amino acids, gases, electrolytes, sugars, hormones,
minerals, vitamins, and water
What percent of plasma is water? - Answer: 92%
Formed elements comprise what percent of circulating blood? - Answer: 45%
another name for red blood cells... - Answer: Erythrocytes
What makes up the formed elements? - Answer: Red blood cells, White blood cells, and
platelets
Another name for white blood cells... - Answer: leukocytes
another name for platelets... - Answer: thrombocytes
What comprises 99% of the formed elements? - Answer: red blood cells (erythrocytes)
Where do blood cells originate? - Answer: stem cells in bone marrow
How many RBCs are in a microliter of blood? - Answer: 4.2 to 6.2 million
Normal life span of an RBS is... - Answer: 120 days
EXAM (NHA) Comprehensive
Questions and Solutions
Graded A+
Characteristics imperative to a phlebotomist - Answer: Dependability, honesty, integrity,
empathy and compassion, professional appearance, interpersonal skills
Circulatory system function - Answer: deliver oxygen, nutrients, hormones, & enzymes to cells
and transport cellular waste (CO2) to organs where they can be expelled
The two circulations - Answer: Pulmonary & Systemic
Pulmonary circulation - Answer: 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? - Answer: alveoli
Systemic circulation - Answer: carries oxygenated blood from left ventricle throughout the body
Upper chambers of the heart - Answer: right and left atria
lower chambers of the heart - Answer: right and left ventricle
,tricuspid valve - Answer: 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 - Answer: semi-lunar valve situated between the right ventricle and the
pulmonary artery
Mitral valve (or bicuspid) - Answer: atrioventricular valve located between the left atrium and
left ventricle
aortic valve - Answer: semi lunar valve situated between the left ventricle and aorta
Flow of blood through the heart - Answer: 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 - Answer: Endocardium, myocardium, epicardium
Blood vessels - Answer: arteries, arterioles, capillaries, venules, veins, superior & inferior vena
cavae
aorta, arteries, and arterioles carry_____ blood _______ the heart - Answer: oxygenated &
away from
venules, veins, and superior and inferior vena cave carry _____ blood ________ the heart -
Answer: deoxygenated & back to
The average adult has ______ liters of blood - Answer: 5-6
, Plasma comprises how much of circulating blood? - Answer: 55%
Plasma contains.... - Answer: proteins, amino acids, gases, electrolytes, sugars, hormones,
minerals, vitamins, and water
What percent of plasma is water? - Answer: 92%
Formed elements comprise what percent of circulating blood? - Answer: 45%
another name for red blood cells... - Answer: Erythrocytes
What makes up the formed elements? - Answer: Red blood cells, White blood cells, and
platelets
Another name for white blood cells... - Answer: leukocytes
another name for platelets... - Answer: thrombocytes
What comprises 99% of the formed elements? - Answer: red blood cells (erythrocytes)
Where do blood cells originate? - Answer: stem cells in bone marrow
How many RBCs are in a microliter of blood? - Answer: 4.2 to 6.2 million
Normal life span of an RBS is... - Answer: 120 days
