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PHLEBOTOMY NATIONAL EXAM (NHA)
Questions and Answers (100% Correct
Answers) Already Graded A+
Characteristics imperative to a phlebotomist Ans: Dependability,
honesty, integrity, empathy and compassion, professional appearance,
interpersonal skills
© 2026 Assignment Expert
Circulatory system function Ans: deliver oxygen, nutrients, hormones, &
enzymes to cells and transport cellular waste (CO2) to organs where
they can be expelled
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The two circulations Ans: Pulmonary & Systemic
Pulmonary circulation Ans: 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? Ans: alveoli
Systemic circulation Ans: carries oxygenated blood from left ventricle
throughout the body
Upper chambers of the heart Ans: right and left atria
lower chambers of the heart Ans: right and left ventricle
tricuspid valve Ans: atrioventricular valve, situated between right atrium
and right ventricle
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**to remember this valve is on the right side of the heart-- people TRY to
be RIGHT
pulmonic valve Ans: semi-lunar valve situated between the right
ventricle and the pulmonary artery
Mitral valve (or bicuspid) Ans: atrioventricular valve located between
the left atrium and left ventricle
© 2026 Assignment Expert
aortic valve Ans: semi lunar valve situated between the left ventricle and
aorta
Flow of blood through the heart Ans: Superior and Inferior Vena Cavae<
Guru01 - Stuvia
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 Ans: Endocardium, myocardium, epicardium
Blood vessels Ans: arteries, arterioles, capillaries, venules, veins, superior &
inferior vena cavae
aorta, arteries, and arterioles carry_____ blood _______ the heart Ans:
oxygenated & away from
venules, veins, and superior and inferior vena cave carry _____ blood
________ the heart Ans: deoxygenated & back to
The average adult has ______ liters of blood Ans: 5-6
Plasma comprises how much of circulating blood? Ans: 55%
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Plasma contains.... Ans: proteins, amino acids, gases, electrolytes, sugars,
hormones, minerals, vitamins, and water
What percent of plasma is water? Ans: 92%
Formed elements comprise what percent of circulating blood? Ans: 45%
another name for red blood cells... Ans: Erythrocytes
© 2026 Assignment Expert
What makes up the formed elements? Ans: Red blood cells, White blood
cells, and platelets
Another name for white blood cells... Ans: leukocytes
Guru01 - Stuvia
another name for platelets... Ans: thrombocytes
What comprises 99% of the formed elements? Ans: red blood cells
(erythrocytes)
Where do blood cells originate? Ans: stem cells in bone marrow
How many RBCs are in a microliter of blood? Ans: 4.2 to 6.2 million
Normal life span of an RBS is... Ans: 120 days
Function of a leukocyte Ans: provide the body protection against
infection
Amount of WBCs per microliter of blood Ans: 5,000-10,000
1
PHLEBOTOMY NATIONAL EXAM (NHA)
Questions and Answers (100% Correct
Answers) Already Graded A+
Characteristics imperative to a phlebotomist Ans: Dependability,
honesty, integrity, empathy and compassion, professional appearance,
interpersonal skills
© 2026 Assignment Expert
Circulatory system function Ans: deliver oxygen, nutrients, hormones, &
enzymes to cells and transport cellular waste (CO2) to organs where
they can be expelled
Guru01 - Stuvia
The two circulations Ans: Pulmonary & Systemic
Pulmonary circulation Ans: 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? Ans: alveoli
Systemic circulation Ans: carries oxygenated blood from left ventricle
throughout the body
Upper chambers of the heart Ans: right and left atria
lower chambers of the heart Ans: right and left ventricle
tricuspid valve Ans: atrioventricular valve, situated between right atrium
and right ventricle
,For Expert help and assignment handling,
2
**to remember this valve is on the right side of the heart-- people TRY to
be RIGHT
pulmonic valve Ans: semi-lunar valve situated between the right
ventricle and the pulmonary artery
Mitral valve (or bicuspid) Ans: atrioventricular valve located between
the left atrium and left ventricle
© 2026 Assignment Expert
aortic valve Ans: semi lunar valve situated between the left ventricle and
aorta
Flow of blood through the heart Ans: Superior and Inferior Vena Cavae<
Guru01 - Stuvia
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 Ans: Endocardium, myocardium, epicardium
Blood vessels Ans: arteries, arterioles, capillaries, venules, veins, superior &
inferior vena cavae
aorta, arteries, and arterioles carry_____ blood _______ the heart Ans:
oxygenated & away from
venules, veins, and superior and inferior vena cave carry _____ blood
________ the heart Ans: deoxygenated & back to
The average adult has ______ liters of blood Ans: 5-6
Plasma comprises how much of circulating blood? Ans: 55%
, For Expert help and assignment handling,
3
Plasma contains.... Ans: proteins, amino acids, gases, electrolytes, sugars,
hormones, minerals, vitamins, and water
What percent of plasma is water? Ans: 92%
Formed elements comprise what percent of circulating blood? Ans: 45%
another name for red blood cells... Ans: Erythrocytes
© 2026 Assignment Expert
What makes up the formed elements? Ans: Red blood cells, White blood
cells, and platelets
Another name for white blood cells... Ans: leukocytes
Guru01 - Stuvia
another name for platelets... Ans: thrombocytes
What comprises 99% of the formed elements? Ans: red blood cells
(erythrocytes)
Where do blood cells originate? Ans: stem cells in bone marrow
How many RBCs are in a microliter of blood? Ans: 4.2 to 6.2 million
Normal life span of an RBS is... Ans: 120 days
Function of a leukocyte Ans: provide the body protection against
infection
Amount of WBCs per microliter of blood Ans: 5,000-10,000
