CVS 105 Exam 1 Questions with Correct Answers Latest Update 2026/2027
Another name for breast bone - Answers Sternum
What is another name for heart attack - Answers Myocardial Infraction- Part of heart muscle
dies
What is the difference between a heart attack and cardiac arrest - Answers Cardiac arrest:
electrical problem with the heart which causes sudden stop
Myocardial infraction : blockage, blood cannot get to the heart, AKA Heart Attack
Where is V2 located? - Answers 4th intercostal space to the (patient's) left of the sternum
What are the other names for chest leads? - Answers Precordial leads or Vector leads
What are the chest leads? - Answers V1-V6
How many electrodes are placed as part of the 12 lead EKG? - Answers 10
How many views of the heart are recorded? - Answers 12
What is the most accurate way to measure HR? - Answers 1500 method
Which method is used to calculate an irregular HR? - Answers 6 second
How much is each small box worth in time? - Answers .04 seconds (x 5 = .20)
How much is each big box worth in time? - Answers .20 seconds
What does the vertical line represent? - Answers Voltage/ amplitude
What does the horizontal line represent? - Answers HR in time
What is the name of the line that determines positive or negative? - Answers Isoelectric line
Where is lead II located? - Answers RA to LL
Which is the positive lead in lead II? - Answers LL - Always from negative to positive
What are the limb leads? - Answers Leads : 1, 2, 3 (Bipolar) - LL, LA, RA
What are the augmented leads? - Answers aVR, aVL, aVF; Unipolar
In the suprasternal view, what is imaged? - Answers Aortic arch
What are the 2 superior chambers of the heart? - Answers Right and Left Atria
What are the two inferior chambers of the heart? - Answers Right and left ventricles
, Name the valve located between RA and RV? - Answers Tricuspid valve (AV valve)
Name the valve located between LA and LV? - Answers Mitral/ Bicuspid
Right side of the heart circulation? - Answers Pulmonary
Left side of the heart circulation? - Answers Systemic
What does the P wave represent? - Answers Atrial Depolarization (Atrial Contraction)
What does the QRS represent? - Answers Ventricular Depolarization (Ventricular Contraction)
What does the T wave represent? - Answers Ventricular Repolarization (Ventricular Relaxation)
Which wave shows Atrial Repolarization? - Answers Hidden behind QRS
Name the two AV valves - Answers Tricuspid, Mitral
Name the two semilunar valves - Answers Aortic, Pulmonary
What separates the two superior chambers? - Answers Interatrial septa (IAS)
What separates the two inferior chambers? - Answers Interventricular Septum
Where does the heart (muscle) receive most of its blood supply from? - Answers Right and left
coronary arteries
What is known as the pacemaker of the heart? - Answers SA node
What is the rate of the SA node? - Answers 60-100 BPM
What is the difference between a segment and interval? - Answers A segment has a waveform,
an interval is between waveforms.
How long is the QRS complex? - Answers .06-.10 seconds (1 ½ to 2 ½ small boxes)
How long is the PR interval? - Answers .012-.20 seconds, (3-5 small boxes)
When performing a carotid protocol, to obtain a CCA in trans, which way should the index be
facing? - Answers To the patient's right
The brachiocephalic artery is known as? - Answers Innominate artery
The longest portion of the ICA is? - Answers Cervical
Which is not a portion of the internal ICA? - Answers Superior
Toward the back of the body is - Answers Posterior
Ultrasonic imaging is a real time imagining technique using ____ sound waves to image many
Another name for breast bone - Answers Sternum
What is another name for heart attack - Answers Myocardial Infraction- Part of heart muscle
dies
What is the difference between a heart attack and cardiac arrest - Answers Cardiac arrest:
electrical problem with the heart which causes sudden stop
Myocardial infraction : blockage, blood cannot get to the heart, AKA Heart Attack
Where is V2 located? - Answers 4th intercostal space to the (patient's) left of the sternum
What are the other names for chest leads? - Answers Precordial leads or Vector leads
What are the chest leads? - Answers V1-V6
How many electrodes are placed as part of the 12 lead EKG? - Answers 10
How many views of the heart are recorded? - Answers 12
What is the most accurate way to measure HR? - Answers 1500 method
Which method is used to calculate an irregular HR? - Answers 6 second
How much is each small box worth in time? - Answers .04 seconds (x 5 = .20)
How much is each big box worth in time? - Answers .20 seconds
What does the vertical line represent? - Answers Voltage/ amplitude
What does the horizontal line represent? - Answers HR in time
What is the name of the line that determines positive or negative? - Answers Isoelectric line
Where is lead II located? - Answers RA to LL
Which is the positive lead in lead II? - Answers LL - Always from negative to positive
What are the limb leads? - Answers Leads : 1, 2, 3 (Bipolar) - LL, LA, RA
What are the augmented leads? - Answers aVR, aVL, aVF; Unipolar
In the suprasternal view, what is imaged? - Answers Aortic arch
What are the 2 superior chambers of the heart? - Answers Right and Left Atria
What are the two inferior chambers of the heart? - Answers Right and left ventricles
, Name the valve located between RA and RV? - Answers Tricuspid valve (AV valve)
Name the valve located between LA and LV? - Answers Mitral/ Bicuspid
Right side of the heart circulation? - Answers Pulmonary
Left side of the heart circulation? - Answers Systemic
What does the P wave represent? - Answers Atrial Depolarization (Atrial Contraction)
What does the QRS represent? - Answers Ventricular Depolarization (Ventricular Contraction)
What does the T wave represent? - Answers Ventricular Repolarization (Ventricular Relaxation)
Which wave shows Atrial Repolarization? - Answers Hidden behind QRS
Name the two AV valves - Answers Tricuspid, Mitral
Name the two semilunar valves - Answers Aortic, Pulmonary
What separates the two superior chambers? - Answers Interatrial septa (IAS)
What separates the two inferior chambers? - Answers Interventricular Septum
Where does the heart (muscle) receive most of its blood supply from? - Answers Right and left
coronary arteries
What is known as the pacemaker of the heart? - Answers SA node
What is the rate of the SA node? - Answers 60-100 BPM
What is the difference between a segment and interval? - Answers A segment has a waveform,
an interval is between waveforms.
How long is the QRS complex? - Answers .06-.10 seconds (1 ½ to 2 ½ small boxes)
How long is the PR interval? - Answers .012-.20 seconds, (3-5 small boxes)
When performing a carotid protocol, to obtain a CCA in trans, which way should the index be
facing? - Answers To the patient's right
The brachiocephalic artery is known as? - Answers Innominate artery
The longest portion of the ICA is? - Answers Cervical
Which is not a portion of the internal ICA? - Answers Superior
Toward the back of the body is - Answers Posterior
Ultrasonic imaging is a real time imagining technique using ____ sound waves to image many
