DAANCE MODULE 1 LATEST EXAM WITH
COMPLETE STUDY QUESTIONS AND VERIFIED
ANSWERS GRADED A+ 2025/2026
What is the purpose of the conducting system? To assure that the ventricles
contract as a unit by spreading the impulse rapidly to all the ventricular muscle
fibers almost simultaneously. What is the Purkinje fiber system?
Specialized cardiac muscle fibers that rapidly transmit impulses in the heart and
coordinate contraction of the heart; Networks of this form the AV and SA nodes
What is the cardioacceleratory center?
A group of neurons in the brain stem involved in the acceleration of the heart
action. What is the cardioinhibitory center?
A group of neurons in the brain stem that has an inhibitory influence on the heart
action via the vagus nerve What are sinus rhythms?
Rhythms that originate in the SA node
What takes over if the SA node fails? Ectopic pacemakers
What is the term to describe the lack of oxygen?
Hypoxia
What are the elements of a normal sinus rhythm on a cardiac monitor tracing?
P wave, QRS complex and the T wave.
What is depolarization?
A reversal of the states electrical charge of the conducting fiber
, What is repolarization?
A return of the initial state of electrical charge The P wave is a reflection of
which polarization and produces what?
Depolarization and produces the muscular contraction of the atria
The QRS complex is a reflection of?
The activity producing ventricular contraction
The T wave on a cardiac monitor tracing is evidence of what change in
polarization? Repolarization of the ventricles
In a normal cardiac monitor, the number of P waves is equal to the number of
what?
QRS complexes
The number of QRS complexes per minute represents what?
The heart rate
After leaving the heart, the aorta branches into several large arteries that
supply the head and neck. What is the sequence on the right side?
The first large artery is the brachiocephalic artery. It branches into the common
carotid artery that goes up into the neck and into the right subclavian artery that
goes up into the arm
After leaving the heart, the aorta branches into several large arteries that
supply the head and neck. What is the sequence on the left side?
The left common carotid artery branches off the aorta directly and goes into the
neck.
COMPLETE STUDY QUESTIONS AND VERIFIED
ANSWERS GRADED A+ 2025/2026
What is the purpose of the conducting system? To assure that the ventricles
contract as a unit by spreading the impulse rapidly to all the ventricular muscle
fibers almost simultaneously. What is the Purkinje fiber system?
Specialized cardiac muscle fibers that rapidly transmit impulses in the heart and
coordinate contraction of the heart; Networks of this form the AV and SA nodes
What is the cardioacceleratory center?
A group of neurons in the brain stem involved in the acceleration of the heart
action. What is the cardioinhibitory center?
A group of neurons in the brain stem that has an inhibitory influence on the heart
action via the vagus nerve What are sinus rhythms?
Rhythms that originate in the SA node
What takes over if the SA node fails? Ectopic pacemakers
What is the term to describe the lack of oxygen?
Hypoxia
What are the elements of a normal sinus rhythm on a cardiac monitor tracing?
P wave, QRS complex and the T wave.
What is depolarization?
A reversal of the states electrical charge of the conducting fiber
, What is repolarization?
A return of the initial state of electrical charge The P wave is a reflection of
which polarization and produces what?
Depolarization and produces the muscular contraction of the atria
The QRS complex is a reflection of?
The activity producing ventricular contraction
The T wave on a cardiac monitor tracing is evidence of what change in
polarization? Repolarization of the ventricles
In a normal cardiac monitor, the number of P waves is equal to the number of
what?
QRS complexes
The number of QRS complexes per minute represents what?
The heart rate
After leaving the heart, the aorta branches into several large arteries that
supply the head and neck. What is the sequence on the right side?
The first large artery is the brachiocephalic artery. It branches into the common
carotid artery that goes up into the neck and into the right subclavian artery that
goes up into the arm
After leaving the heart, the aorta branches into several large arteries that
supply the head and neck. What is the sequence on the left side?
The left common carotid artery branches off the aorta directly and goes into the
neck.
