CCT PRACTICE EXAM 2025 | ALL
QUESTIONS AND CORRECT
ANSWERS | GRADED A+ | VERIFIED
ANSWERS | JUST RELEASED
Save
Terms in this set (50)
,1. Which heart 1. B: The right ventricle pumps the
chamber deoxygenated blood it has received
functions to from the right atrium to the lungs.
pump The right atrium pumps
deoxygenated deoxygenated blood from the body
blood to the to the right ventricle. The left atrium
lungs? pumps oxygenated blood from the
a. Right atrium lungs to the left ventricle. The left
b. Right ventricle ventricle pumps oxygenated blood
c. Left atrium to the body.
d. Left ventricle
2. C: Lead III is the most affected by
2. Which lead is
respiration, and therefore the
the most
waveforms may look different
affected by
depending on the respiratory cycle.
respiration?
Because of this, a Q wave that only
a. V2
appears in lead III and is not
b. V4
associated with other
c. Lead III
corresponding changes in other
d. Lead I
leads is not significant.
,3. Which of the 3. A: The sequence by which an
following is the action potential is conducted
correct through the heart is from the
sequence by sinoatrial (SA) node to the
which action atrioventricular (AV) node to the
potentials are bundle branches and then to the
conducted Purkinje fibers.
through the
heart?"
a. SA node → AV
node → bundle
branches →
Purkinje fibers
b. Bundle
branches →
Purkinje fibers →
SA node → AV
node
c. Purkinje fibers
→ SA node →
bundle branches
→ AV node
d. AV node → SA
node → bundle
branches →
Purkinje fibers
, 4. B: The pictured ECG is a second-
degree heart block, type 1. This
rhythm is also called Mobitz I or
Wenckebach. With this heart block
the PR interval gets longer with
4. What type of
each beat until eventually a P wave
heart block is
occurs, but a QRS does not follow (a
seen in the
beat is skipped). After the skipped
following
beat, the pattern starts over again. A
electrocardiogra
first-degree heart block occurs
m (ECG) strip?"
when the PR interval is longer than
0.2 seconds, but the PR interval
a. First-degree
generally remains constant and the
heart block
QRS is not dropped. A second-
b. Second-
degree heart block, type 2, also
degree heart
called Mobitz II, is apparent when
block, type 1
the QRS suddenly fails to show up
c. Second-
after a P wave. A fairly consistent
degree heart
ratio of P waves to QRS complexes
block, type 2
is common, and this rhythm lacks the
d. Third-degree
increasing PR interval that is seen in
heart block
the Mobitz I block. A third-degree
heart block is also called a
complete heart block and the atria
and ventricles beat independently
of one another.
QUESTIONS AND CORRECT
ANSWERS | GRADED A+ | VERIFIED
ANSWERS | JUST RELEASED
Save
Terms in this set (50)
,1. Which heart 1. B: The right ventricle pumps the
chamber deoxygenated blood it has received
functions to from the right atrium to the lungs.
pump The right atrium pumps
deoxygenated deoxygenated blood from the body
blood to the to the right ventricle. The left atrium
lungs? pumps oxygenated blood from the
a. Right atrium lungs to the left ventricle. The left
b. Right ventricle ventricle pumps oxygenated blood
c. Left atrium to the body.
d. Left ventricle
2. C: Lead III is the most affected by
2. Which lead is
respiration, and therefore the
the most
waveforms may look different
affected by
depending on the respiratory cycle.
respiration?
Because of this, a Q wave that only
a. V2
appears in lead III and is not
b. V4
associated with other
c. Lead III
corresponding changes in other
d. Lead I
leads is not significant.
,3. Which of the 3. A: The sequence by which an
following is the action potential is conducted
correct through the heart is from the
sequence by sinoatrial (SA) node to the
which action atrioventricular (AV) node to the
potentials are bundle branches and then to the
conducted Purkinje fibers.
through the
heart?"
a. SA node → AV
node → bundle
branches →
Purkinje fibers
b. Bundle
branches →
Purkinje fibers →
SA node → AV
node
c. Purkinje fibers
→ SA node →
bundle branches
→ AV node
d. AV node → SA
node → bundle
branches →
Purkinje fibers
, 4. B: The pictured ECG is a second-
degree heart block, type 1. This
rhythm is also called Mobitz I or
Wenckebach. With this heart block
the PR interval gets longer with
4. What type of
each beat until eventually a P wave
heart block is
occurs, but a QRS does not follow (a
seen in the
beat is skipped). After the skipped
following
beat, the pattern starts over again. A
electrocardiogra
first-degree heart block occurs
m (ECG) strip?"
when the PR interval is longer than
0.2 seconds, but the PR interval
a. First-degree
generally remains constant and the
heart block
QRS is not dropped. A second-
b. Second-
degree heart block, type 2, also
degree heart
called Mobitz II, is apparent when
block, type 1
the QRS suddenly fails to show up
c. Second-
after a P wave. A fairly consistent
degree heart
ratio of P waves to QRS complexes
block, type 2
is common, and this rhythm lacks the
d. Third-degree
increasing PR interval that is seen in
heart block
the Mobitz I block. A third-degree
heart block is also called a
complete heart block and the atria
and ventricles beat independently
of one another.
