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(NHA) Medical Assisting Certification Study
Guide Questions and Correct Answers
CC Ans: — Chief Complaint
Segment Ans: — Line between two waveforms
P Wave Ans: — Arterial Depolarization
How many 1mm boxes are in a 6 second rhythm strip? Ans: — 30
one millimeter boxes
The SA node represents which waveform on the EKG? Ans: — Only
the P wave
What is the reading you can get from the RR interval? Ans: —
Ventricular Pulse
What is the primary stage of Hemolysis? Ans: — Vascular phase
and platelet phase together
What is Electrophoresis? Ans: — Analyzation of the chemical
components of blood, e.g. hemoglobin, serum, urine, cerebrospinal
fluid based on electrical charge.
Positive testing for occult blood in a stool sample turns which
color? Ans: — Turns blue on a positive test for occult blood in
feces
The stages of Hemostasis Ans: — 1. Vascular, 2. Platelet Phase, 3.
Coagulation Phase,
4. Fibronolysis
Blood vessels Ans: — Aorta, Arteries, Arterioles, Capillaries,
Venues, Veins, Superior and Inferior Vena Cavae
© 2025 All rights reserved
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Outer connective tissue layer of a blood vessel Ans: — Tunica
Adventitia
Inner endothelial tissue of a blood vessel Ans: — Tunica Intima
The inner smooth layer of a blood vessel Ans: — Tunica tunica
media
The standards of right and wrong in a medical setting Ans: —
Code of Ethics
What do you find in capillaries? Ans: — A mixture of venous and
arterial blood is found
The average adult has how many liters of blood? Ans: — 5-6 Liters
What is the percentage of water in the blood? Ans: — 92%
Percentage of plasma in the blood? Ans: — 55%
Percentage of formed elements in the blood? Ans: — 45%
99% of formed elements in the blood Ans: — RBC,s or Erythrocytes
Where do you find hemoglobin? Ans: — RBC,s
Where do all blood cells originate? Ans: — Bone marrow
How many RBC,s per microliter of blood Ans: — 4.2-6.2 million
What is the second most numerous WBC Ans: — Lymphocyte with
20-40%
Their numbers increase in intracellular infections and TB Ans: —
Monocytes
Their numbers increase in bacterial infections and are often first
on the scene Ans: — Neutrophils
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These WBC,s play an important role in viral infection as well as in
immunity Ans: — Lymphocytes
Number of leukocytes for average adult per microliter Ans: —
5000-10000
Leukopenia Ans: — Decrease in WBC,s seen with viral infection
and leukemia
Comprises 3-8% of WBC or leukocytes Ans: — Monocytes
Largest in size of the leukocytes Ans: — Monocytes
Carries histamine Ans: — Basophil
Injury to a blood vessel that causes it to constrict, slowing the clod
of blood. Ans: — Vascular phase of Hemostasis
Preferred site for a venipuncture Ans: — Antecubital Fossa
Test used to evaluate the intrinsic pathway and monitor heparin
therapy Ans: — APTT also know as PTT
Test used to evaluate the extrinsic pathway and also used to
monitor warfarin therapy Ans: — PT
Fibrinolysis Ans: — Breakdown and removal of a clot
Converts the temporary platelet plug in a stable fibrin clot Ans: —
Coagulation Phase
2nd choice vein for venipuncture and most often the only one
palatable in an obese Pt. Ans: — Cephalic vein
Antiseptics used in Phlebotomy Ans: — 70% isopropyl alcohol
pads most common, provolone - iodine for BC,s and Chlorhexidine
gluconate for patients that are allergic to Betadine/ Iodine
© 2025 All rights reserved
(NHA) Medical Assisting Certification Study
Guide Questions and Correct Answers
CC Ans: — Chief Complaint
Segment Ans: — Line between two waveforms
P Wave Ans: — Arterial Depolarization
How many 1mm boxes are in a 6 second rhythm strip? Ans: — 30
one millimeter boxes
The SA node represents which waveform on the EKG? Ans: — Only
the P wave
What is the reading you can get from the RR interval? Ans: —
Ventricular Pulse
What is the primary stage of Hemolysis? Ans: — Vascular phase
and platelet phase together
What is Electrophoresis? Ans: — Analyzation of the chemical
components of blood, e.g. hemoglobin, serum, urine, cerebrospinal
fluid based on electrical charge.
Positive testing for occult blood in a stool sample turns which
color? Ans: — Turns blue on a positive test for occult blood in
feces
The stages of Hemostasis Ans: — 1. Vascular, 2. Platelet Phase, 3.
Coagulation Phase,
4. Fibronolysis
Blood vessels Ans: — Aorta, Arteries, Arterioles, Capillaries,
Venues, Veins, Superior and Inferior Vena Cavae
© 2025 All rights reserved
, 2 | Page
Outer connective tissue layer of a blood vessel Ans: — Tunica
Adventitia
Inner endothelial tissue of a blood vessel Ans: — Tunica Intima
The inner smooth layer of a blood vessel Ans: — Tunica tunica
media
The standards of right and wrong in a medical setting Ans: —
Code of Ethics
What do you find in capillaries? Ans: — A mixture of venous and
arterial blood is found
The average adult has how many liters of blood? Ans: — 5-6 Liters
What is the percentage of water in the blood? Ans: — 92%
Percentage of plasma in the blood? Ans: — 55%
Percentage of formed elements in the blood? Ans: — 45%
99% of formed elements in the blood Ans: — RBC,s or Erythrocytes
Where do you find hemoglobin? Ans: — RBC,s
Where do all blood cells originate? Ans: — Bone marrow
How many RBC,s per microliter of blood Ans: — 4.2-6.2 million
What is the second most numerous WBC Ans: — Lymphocyte with
20-40%
Their numbers increase in intracellular infections and TB Ans: —
Monocytes
Their numbers increase in bacterial infections and are often first
on the scene Ans: — Neutrophils
© 2025 All rights reserved
, 3 | Page
These WBC,s play an important role in viral infection as well as in
immunity Ans: — Lymphocytes
Number of leukocytes for average adult per microliter Ans: —
5000-10000
Leukopenia Ans: — Decrease in WBC,s seen with viral infection
and leukemia
Comprises 3-8% of WBC or leukocytes Ans: — Monocytes
Largest in size of the leukocytes Ans: — Monocytes
Carries histamine Ans: — Basophil
Injury to a blood vessel that causes it to constrict, slowing the clod
of blood. Ans: — Vascular phase of Hemostasis
Preferred site for a venipuncture Ans: — Antecubital Fossa
Test used to evaluate the intrinsic pathway and monitor heparin
therapy Ans: — APTT also know as PTT
Test used to evaluate the extrinsic pathway and also used to
monitor warfarin therapy Ans: — PT
Fibrinolysis Ans: — Breakdown and removal of a clot
Converts the temporary platelet plug in a stable fibrin clot Ans: —
Coagulation Phase
2nd choice vein for venipuncture and most often the only one
palatable in an obese Pt. Ans: — Cephalic vein
Antiseptics used in Phlebotomy Ans: — 70% isopropyl alcohol
pads most common, provolone - iodine for BC,s and Chlorhexidine
gluconate for patients that are allergic to Betadine/ Iodine
© 2025 All rights reserved
