(NHA) MEDICAL ASSISTING CERTIFICATION STUDY GUIDE QUESTIONS
ANSWERS LATEST UPDATED 2025/2026 A COMPLETE EXAM ALL
ANSWERS 100% ACCURATE BEST RATED A+ GUARANTEED SUCCESS
A muscular hollow organ located in the thoracic cavity between lungs -
CORRECT ANSWERS Epicardium
Serous fluid - CORRECT ANSWERS Prevents friction as the heart beats
Receives deoxygenated blood returning to the heart from the body - CORRECT
ANSWERS Right atrium
Receives deoxygenated blood from the right atrium which it pumps to the lungs
through the pulmonary artery - CORRECT ANSWERS Right ventricle
Receives oxygenated blood from the left atrium and pumps it to the body thru the
aorta - CORRECT ANSWERS Left ventricle
The AV valves - CORRECT ANSWERS Tricuspid and mitral (Bicuspid)
The semilunar - CORRECT ANSWERS Aortic and pulmonic
Valve located between the right ventricle and pulmonary trunk - CORRECT
ANSWERS Pulmonic valve
Valve located between the left atrium and the left ventricle - CORRECT
ANSWERS Mitral or bicuspid
,(NHA) MEDICAL ASSISTING CERTIFICATION STUDY GUIDE QUESTIONS
ANSWERS LATEST UPDATED 2025/2026 A COMPLETE EXAM ALL
ANSWERS 100% ACCURATE BEST RATED A+ GUARANTEED SUCCESS
Heart sounds produced by closure of the valves - CORRECT ANSWERS
Murmurs
Caused by diseases of the valves or other structural abnormalities - CORRECT
ANSWERS Murmurs
First heart sound due to the closure of the mitral and tricuspid valves -
CORRECT ANSWERS S1 in the upper chambers or atria
S2 in the ventricles - CORRECT ANSWERS Second heart sound due to the
closure of the aortic and pulmonic valves
Arteries supplying the heart - CORRECT ANSWERS Right and left coronary
from the aorta
The ANS or autonomic nervous system is subdivided into - CORRECT
ANSWERS Sympathetic and parasympathetic nervous system
The SP or sympathetic nervous system affects - CORRECT ANSWERS Both,
the atria and the ventricles by increasing heart rate, conduction and irritability
The PNS or parasympathetic nervous system affects - CORRECT ANSWERS
Atria only by decreasing heart rate, conduction and irritability
,(NHA) MEDICAL ASSISTING CERTIFICATION STUDY GUIDE QUESTIONS
ANSWERS LATEST UPDATED 2025/2026 A COMPLETE EXAM ALL
ANSWERS 100% ACCURATE BEST RATED A+ GUARANTEED SUCCESS
Automaticity - CORRECT ANSWERS Ability of the cardiac cells to initiate
own electrical impulses without outside stimulation
Excitability or irritability - CORRECT ANSWERS Ability of cardiac cells to
respond to external stimulus
Contractibility - CORRECT ANSWERS Ability of cardiac cells to shorten
(Muscles contraction) in response to electrical stimulus
Digitalis, dopamine, epinephrine - CORRECT ANSWERS Drugs that increase
the contractility of the heart
Depolarization flows from - CORRECT ANSWERS Endocardium to the
myocardium to the epicardium
Results in myocardial relaxation - CORRECT ANSWERS Repolarization
Found in the upper posterior portion of the right atrial wall below the vena cava
opening - CORRECT ANSWERS SA node
Consists of anterior, middle and posterior divisions that distribute electrical
impulses by SA to Av node - CORRECT ANSWERS Internodal pathway
Located at the posterior septal wall of the right atrium just above the tricuspid
valve - CORRECT ANSWERS AV node
, (NHA) MEDICAL ASSISTING CERTIFICATION STUDY GUIDE QUESTIONS
ANSWERS LATEST UPDATED 2025/2026 A COMPLETE EXAM ALL
ANSWERS 100% ACCURATE BEST RATED A+ GUARANTEED SUCCESS
Found at the superior portion of the inter ventricular septum, pathway that leads
out of the SA node - CORRECT ANSWERS Bundle of HIS
Located within the ventricular endocardium, consists of small conduction fibers -
CORRECT ANSWERS Purkinjie fibers
This fires at 20-40 beats per minute - CORRECT ANSWERS Purkinjie fibers
This has a 1/10th of a delay to allow blood to flow from atria to ventricles -
CORRECT ANSWERS AV node
Has an intrinsic firing rate of 40-60bpm - CORRECT ANSWERS Bundle of HIS
Normal firing rate of 60-100bpm and is the primary pacemaker of the heart -
CORRECT ANSWERS SA node
Acts a pacemaker when higher level pacemakers fail - CORRECT ANSWERS
Purkinjie fibers
Limb leads consist of - CORRECT ANSWERS 3 bipolar and 3 augmented
leads
These record electrical potentials in the frontal place - CORRECT ANSWERS
The limb leads
ANSWERS LATEST UPDATED 2025/2026 A COMPLETE EXAM ALL
ANSWERS 100% ACCURATE BEST RATED A+ GUARANTEED SUCCESS
A muscular hollow organ located in the thoracic cavity between lungs -
CORRECT ANSWERS Epicardium
Serous fluid - CORRECT ANSWERS Prevents friction as the heart beats
Receives deoxygenated blood returning to the heart from the body - CORRECT
ANSWERS Right atrium
Receives deoxygenated blood from the right atrium which it pumps to the lungs
through the pulmonary artery - CORRECT ANSWERS Right ventricle
Receives oxygenated blood from the left atrium and pumps it to the body thru the
aorta - CORRECT ANSWERS Left ventricle
The AV valves - CORRECT ANSWERS Tricuspid and mitral (Bicuspid)
The semilunar - CORRECT ANSWERS Aortic and pulmonic
Valve located between the right ventricle and pulmonary trunk - CORRECT
ANSWERS Pulmonic valve
Valve located between the left atrium and the left ventricle - CORRECT
ANSWERS Mitral or bicuspid
,(NHA) MEDICAL ASSISTING CERTIFICATION STUDY GUIDE QUESTIONS
ANSWERS LATEST UPDATED 2025/2026 A COMPLETE EXAM ALL
ANSWERS 100% ACCURATE BEST RATED A+ GUARANTEED SUCCESS
Heart sounds produced by closure of the valves - CORRECT ANSWERS
Murmurs
Caused by diseases of the valves or other structural abnormalities - CORRECT
ANSWERS Murmurs
First heart sound due to the closure of the mitral and tricuspid valves -
CORRECT ANSWERS S1 in the upper chambers or atria
S2 in the ventricles - CORRECT ANSWERS Second heart sound due to the
closure of the aortic and pulmonic valves
Arteries supplying the heart - CORRECT ANSWERS Right and left coronary
from the aorta
The ANS or autonomic nervous system is subdivided into - CORRECT
ANSWERS Sympathetic and parasympathetic nervous system
The SP or sympathetic nervous system affects - CORRECT ANSWERS Both,
the atria and the ventricles by increasing heart rate, conduction and irritability
The PNS or parasympathetic nervous system affects - CORRECT ANSWERS
Atria only by decreasing heart rate, conduction and irritability
,(NHA) MEDICAL ASSISTING CERTIFICATION STUDY GUIDE QUESTIONS
ANSWERS LATEST UPDATED 2025/2026 A COMPLETE EXAM ALL
ANSWERS 100% ACCURATE BEST RATED A+ GUARANTEED SUCCESS
Automaticity - CORRECT ANSWERS Ability of the cardiac cells to initiate
own electrical impulses without outside stimulation
Excitability or irritability - CORRECT ANSWERS Ability of cardiac cells to
respond to external stimulus
Contractibility - CORRECT ANSWERS Ability of cardiac cells to shorten
(Muscles contraction) in response to electrical stimulus
Digitalis, dopamine, epinephrine - CORRECT ANSWERS Drugs that increase
the contractility of the heart
Depolarization flows from - CORRECT ANSWERS Endocardium to the
myocardium to the epicardium
Results in myocardial relaxation - CORRECT ANSWERS Repolarization
Found in the upper posterior portion of the right atrial wall below the vena cava
opening - CORRECT ANSWERS SA node
Consists of anterior, middle and posterior divisions that distribute electrical
impulses by SA to Av node - CORRECT ANSWERS Internodal pathway
Located at the posterior septal wall of the right atrium just above the tricuspid
valve - CORRECT ANSWERS AV node
, (NHA) MEDICAL ASSISTING CERTIFICATION STUDY GUIDE QUESTIONS
ANSWERS LATEST UPDATED 2025/2026 A COMPLETE EXAM ALL
ANSWERS 100% ACCURATE BEST RATED A+ GUARANTEED SUCCESS
Found at the superior portion of the inter ventricular septum, pathway that leads
out of the SA node - CORRECT ANSWERS Bundle of HIS
Located within the ventricular endocardium, consists of small conduction fibers -
CORRECT ANSWERS Purkinjie fibers
This fires at 20-40 beats per minute - CORRECT ANSWERS Purkinjie fibers
This has a 1/10th of a delay to allow blood to flow from atria to ventricles -
CORRECT ANSWERS AV node
Has an intrinsic firing rate of 40-60bpm - CORRECT ANSWERS Bundle of HIS
Normal firing rate of 60-100bpm and is the primary pacemaker of the heart -
CORRECT ANSWERS SA node
Acts a pacemaker when higher level pacemakers fail - CORRECT ANSWERS
Purkinjie fibers
Limb leads consist of - CORRECT ANSWERS 3 bipolar and 3 augmented
leads
These record electrical potentials in the frontal place - CORRECT ANSWERS
The limb leads
