BCIT-NSCC-7150 MIDTERM UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
Question:
1. The Right and left coronary arteries arise from the:
Left ventricle
Right Atrium
Coronary sinus
Trunk of the Aorta
Answer:
Trunk of aorta
Question:
2. The primary functions of the myocardial working cells
include:
Automaticity
Regeneration
Contraction and relaxation
Impulse propagation
Answer:
Contraction and relaxation
Question:
3. The ability of cardiac pacemaker cells to generate their
own electrical impulses spontaneously without external,
or nervous stimulation is known as:
Automaticity
Contractility
Conductivity
Exciatability
Answer:
Automacity
Question:
4. The ability of Cardiac cells to respond to an electrical
stimulus is referred to as:
Automaticity
Contractility
Conductivity
Excitability
Answer:
Excitability
,Question:
5. The ability of cardiac cells to receive an electrical
stimulus and then transmit the stimulus to another cardiac
cell is known as:
Irritability
Automaticity
Contractility
Conductivity
Answer:
Conductivity
Question:
6. The SA node is located in the:
Right Atrium
Right Ventricle
Purkinje fibre tract
AV septum
Answer:
Right atrium
Question:
7. The intrinsic rate of AV junction is
Answer:
40-60 bpm
Question:
8. The intrinsic rate of the SA node is
Answer:
60-100 bpm
Question:
9. The intrinsic rate of purkinje fibers is
Answer:
20-40 bpm
Question:
10. The ECG is used to:
Answer:
Evaluate electrical activity in the heart
ECG waveforms are generated by millions of action potentials -- recorded as
vectors
, Question:
11. The major blood vessel receiving blood from the
systemic circulation is the:
Answer:
Superior + inferior vena cava
Question:
12. The QRS complex represents:
Answer:
Ventricular depolarization
Question:
13. What is ventricular depolarization?
What is ventricular repolarization
Answer:
Depolarization = D for "DO THE WORK" --> they are ready to contract, to send an
impulse; represented by QRS
Repolarization = R for "RECOVER" --> they're resting after contracting to allow for
filling; represented by T wave
Question:
14. What does the P wave represent ?
Answer:
Atrial depolarization
The atria contracts first = the P comes first on the ECG --> think "P = pumping
blood" (depolarization)
Question:
15. What does the T wave represent
Answer:
Ventricular repolarization
The ventricles relax last = the T is last --> think "T = tired and relaxing"
(repolarization)
Question:
16. What is atrial depolarization?
What is atrial repolarization?
Answer:
Depolarization = D for "DO THE WORK" --> atria contract to push blood into
ventricles; represented by the P wave
Repolarization = R for "RECOVERING" --> atria relax after contracting to allow for
filling
QUESTIONS AND CORRECT ANSWERS
Question:
1. The Right and left coronary arteries arise from the:
Left ventricle
Right Atrium
Coronary sinus
Trunk of the Aorta
Answer:
Trunk of aorta
Question:
2. The primary functions of the myocardial working cells
include:
Automaticity
Regeneration
Contraction and relaxation
Impulse propagation
Answer:
Contraction and relaxation
Question:
3. The ability of cardiac pacemaker cells to generate their
own electrical impulses spontaneously without external,
or nervous stimulation is known as:
Automaticity
Contractility
Conductivity
Exciatability
Answer:
Automacity
Question:
4. The ability of Cardiac cells to respond to an electrical
stimulus is referred to as:
Automaticity
Contractility
Conductivity
Excitability
Answer:
Excitability
,Question:
5. The ability of cardiac cells to receive an electrical
stimulus and then transmit the stimulus to another cardiac
cell is known as:
Irritability
Automaticity
Contractility
Conductivity
Answer:
Conductivity
Question:
6. The SA node is located in the:
Right Atrium
Right Ventricle
Purkinje fibre tract
AV septum
Answer:
Right atrium
Question:
7. The intrinsic rate of AV junction is
Answer:
40-60 bpm
Question:
8. The intrinsic rate of the SA node is
Answer:
60-100 bpm
Question:
9. The intrinsic rate of purkinje fibers is
Answer:
20-40 bpm
Question:
10. The ECG is used to:
Answer:
Evaluate electrical activity in the heart
ECG waveforms are generated by millions of action potentials -- recorded as
vectors
, Question:
11. The major blood vessel receiving blood from the
systemic circulation is the:
Answer:
Superior + inferior vena cava
Question:
12. The QRS complex represents:
Answer:
Ventricular depolarization
Question:
13. What is ventricular depolarization?
What is ventricular repolarization
Answer:
Depolarization = D for "DO THE WORK" --> they are ready to contract, to send an
impulse; represented by QRS
Repolarization = R for "RECOVER" --> they're resting after contracting to allow for
filling; represented by T wave
Question:
14. What does the P wave represent ?
Answer:
Atrial depolarization
The atria contracts first = the P comes first on the ECG --> think "P = pumping
blood" (depolarization)
Question:
15. What does the T wave represent
Answer:
Ventricular repolarization
The ventricles relax last = the T is last --> think "T = tired and relaxing"
(repolarization)
Question:
16. What is atrial depolarization?
What is atrial repolarization?
Answer:
Depolarization = D for "DO THE WORK" --> atria contract to push blood into
ventricles; represented by the P wave
Repolarization = R for "RECOVERING" --> atria relax after contracting to allow for
filling
