#1
Which of the following waves on an electrocardiogram represents ventricular depolarization?
P wave
QRS complex
T wave
U wave
#2
What does the T wave on an electrocardiogram represent?
Atrial depolarization
Atrial repolarization
Ventricular depolarization
Ventricular repolarization
#3
Which of the following lung volumes represents the volume of air inspired or expired during normal breathing?
Forced vital capacity (FVC)
Residual volume (RV)
Tidal volume (TV)
Expiratory reserve volume (ERV)
#4
Which of the following pulmonary function tests measures the volume of air inspired or expired forcefully in the first second?
Forced vital capacity (FVC)
Forced expiratory volume in 1 second (FEV1)
Peak expiratory flow (PEF)
Total lung capacity (TLC)
#5
Which of the following pulmonary function tests measures the amount of air forcefully exhaled in one breath after a deep inhalation?
Forced vital capacity (FVC)
Forced expiratory volume in 1 second (FEV1)
Peak expiratory flow (PEF)
Total lung capacity (TLC)
#6
Which of the following lung volumes represents the volume of air remaining in the lungs after a maximal expiration?
Forced vital capacity (FVC)
Residual volume (RV)
Tidal volume (TV)
Expiratory reserve volume (ERV)
#7
Which of the following pulmonary function tests measures the maximum amount of air a person can exhale after a maximum inhalation?
Forced vital capacity (FVC)
Forced expiratory volume in 1 second (FEV1)
Peak expiratory flow (PEF)
Total lung capacity (TLC)
#8
In electrocardiography, what does a prolonged PR interval indicate?
Atrial depolarization
Atrial repolarization
Ventricular depolarization
Delayed conduction through the AV node
#9
Which of the following pulmonary function tests measures the rate at which air can be exhaled forcefully after a maximal inhalation?
Forced vital capacity (FVC)
Forced expiratory volume in 1 second (FEV1)
Peak expiratory flow (PEF)
Total lung capacity (TLC)
#10
Which of the following represents the correct order of electrical conduction in the heart?
SA node - AV node - Bundle of His - Purkinje fibers
AV node - SA node - Bundle of His - Purkinje fibers
Purkinje fibers - Bundle of His - AV node - SA node
SA node - Bundle of His - AV node - Purkinje fibers
#11
What is the normal range for the PR interval in an electrocardiogram?
0.04 to 0.12 seconds
0.12 to 0.20 seconds
0.20 to 0.40 seconds
0.40 to 0.60 seconds
#12
What is the purpose of the QRS complex on an electrocardiogram?
Atrial depolarization
Atrial repolarization
Ventricular depolarization
Ventricular repolarization
#13
What is the purpose of the U wave on an electrocardiogram?
Atrial depolarization
Atrial repolarization
Ventricular depolarization
Ventricular repolarization
#14
What does the Q wave on an electrocardiogram represent?
Atrial depolarization
Atrial repolarization
Ventricular depolarization
Ventricular repolarization
#15
What does the ST segment represent on an electrocardiogram?
Isoelectric period between ventricular depolarization and repolarization
Atrial depolarization
Atrial repolarization
Ventricular repolarization
#16
What does the J point represent on an electrocardiogram?
Isoelectric period between ventricular depolarization and repolarization
Atrial depolarization
Atrial repolarization
Ventricular repolarization
#17
What is the primary function of the Bundle of His in the heart's electrical conduction system?
Initiating atrial depolarization
Conducting electrical signals from the AV node to the Purkinje fibers
Initiating ventricular depolarization
Conducting electrical signals from the SA node to the AV node