WorksheetsEKG/ECG and Heart Anatomy
Total questions: 20
Worksheet time: 10mins
Where is the heart located?
upper left abdominal quadrant
left side of thoracic cavity
posterior to the umbilicus
center of the dorsal cavity
What is the purpose of the valves in the heart?
control speed of heart beat
keep blood flowing in one direction
prevent pathogens from entering the heart
separate the heart into two sides
Which chamber of the heart receives deoxygenated blood from the body?
left atrium
left ventricle
right atrium
right ventricle
Which chamber of the heart contains a lubricating fluid that reduces friction as the heart beats?
endocardium
pericardium
myocardium
pleura
What does EKG/ECG stand for?
electric cardiac graphing
electronic coronary geography
electrocardiogram
elemental cardioglyph
What does an ECG measure?
heart function
blood flow
brain activity
lung capacity
Which component of the ECG cycle shows ventricular depolarization?
V
T
QRS
P
What is the contraction phase of a heartbeat?
diastole
SA node
systole
impulse
Which of these terms refers to when the electrical impulse starts in the SA node and causes the atria to contract?
atrial depolarization
repolarization
ECG cycle
ventricular depolarization
How many chambers does the heart have?
1
2
3
4
Which wave of the ECG cycle shows atrial depolarization?
P
QRS
A
T
Which layer of the heart is made of muscle tissue and pumps blood through the system?
pericardium
myocardium
endocardium
aorta
Which of these tissues is known as the body's natural pacemaker?
SA node
Purkinje fibers
AV node
Bundle of His
Which chamber of the heart contracts to send blood to the pulmonary artery and lungs?
left atrium
left ventricle
right atrium
right ventricle
How long does the average cardiac cycle last?
0.08 seconds
0.8 seconds
8 seconds
8 minutes
Which of the following is true?
electrical impulses in the heart cause the muscles to contract
waves in the ECG cycle represent number of heartbeats
the time of electrical recovery in ventricles before a new heartbeat starts is known as ventricular depolarization
muscle tissue in many body organs is able to stimulate its own contractions
Which wave of the ECG cycle shows repolarization?
P
QRS
D
T
Which major blood vessel delivers blood from the body to the heart?
vena cava
aorta
pulmonary vein
mitral valve
Which cranial nerve affects heart rate?
CN II
CN VII
CN X
CN XII
Activation of which division of the peripheral nervous system would cause an increase in heart rate in addition to pupil dilation and epinephrine release?
somatic nervous system
autonomic nervous system
sympathetic nervous system
parasympathetic nervous system
