{Answered} PHLEBOTOMY NATIONAL
EXAM (NHA) QUESTIONS AND
ANSWERS | 2025 LATEST UPDATED.
100% Verified.
Characteristics imperative to a phlebotomist
Dependability, honesty, integrity, empathy and compassion, professional appearance, interpersonal
skills
Circulatory system function
deliver oxygen, nutrients, hormones, & enzymes to cells and transport cellular waste (CO2) to organs
where they can be expelled
The two circulations
Pulmonary & Systemic
Pulmonary circulation
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?
alveoli
Systemic circulation
carries oxygenated blood from left ventricle throughout the body
Upper chambers of the heart
right and left atria
lower chambers of the heart
right and left ventricle
tricuspid valve
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
semi-lunar valve situated between the right ventricle and the pulmonary artery
Mitral valve (or bicuspid)
atrioventricular valve located between the left atrium and left ventricle
, aortic valve
semi lunar valve situated between the left ventricle and aorta
Flow of blood through the heart
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
Endocardium, myocardium, epicardium
Blood vessels
arteries, arterioles, capillaries, venules, veins, superior & inferior vena cavae
aorta, arteries, and arterioles carry_____ blood _______ the heart
oxygenated & away from
venules, veins, and superior and inferior vena cave carry _____ blood ________ the heart
deoxygenated & back to
The average adult has ______ liters of blood
5-6
Plasma comprises how much of circulating blood?
55%
Plasma contains....
proteins, amino acids, gases, electrolytes, sugars, hormones, minerals, vitamins, and water
What percent of plasma is water?
92%
Formed elements comprise what percent of circulating blood?
45%
another name for red blood cells...
Erythrocytes
What makes up the formed elements?
Red blood cells, White blood cells, and platelets
Another name for white blood cells...
leukocytes
another name for platelets...
thrombocytes
EXAM (NHA) QUESTIONS AND
ANSWERS | 2025 LATEST UPDATED.
100% Verified.
Characteristics imperative to a phlebotomist
Dependability, honesty, integrity, empathy and compassion, professional appearance, interpersonal
skills
Circulatory system function
deliver oxygen, nutrients, hormones, & enzymes to cells and transport cellular waste (CO2) to organs
where they can be expelled
The two circulations
Pulmonary & Systemic
Pulmonary circulation
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?
alveoli
Systemic circulation
carries oxygenated blood from left ventricle throughout the body
Upper chambers of the heart
right and left atria
lower chambers of the heart
right and left ventricle
tricuspid valve
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
semi-lunar valve situated between the right ventricle and the pulmonary artery
Mitral valve (or bicuspid)
atrioventricular valve located between the left atrium and left ventricle
, aortic valve
semi lunar valve situated between the left ventricle and aorta
Flow of blood through the heart
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
Endocardium, myocardium, epicardium
Blood vessels
arteries, arterioles, capillaries, venules, veins, superior & inferior vena cavae
aorta, arteries, and arterioles carry_____ blood _______ the heart
oxygenated & away from
venules, veins, and superior and inferior vena cave carry _____ blood ________ the heart
deoxygenated & back to
The average adult has ______ liters of blood
5-6
Plasma comprises how much of circulating blood?
55%
Plasma contains....
proteins, amino acids, gases, electrolytes, sugars, hormones, minerals, vitamins, and water
What percent of plasma is water?
92%
Formed elements comprise what percent of circulating blood?
45%
another name for red blood cells...
Erythrocytes
What makes up the formed elements?
Red blood cells, White blood cells, and platelets
Another name for white blood cells...
leukocytes
another name for platelets...
thrombocytes
