Page 1 of 75
IUPUI PHYSIOLOGY 2025/2026 EXAM 4 BANK
CURRENTLY TESTING QUESTIONS AND DETAILED
CORRECT ANSWERS (VERIFIED) GUARANTEED
PASS/TOP-RATED A+.
IUPUI
Ace your IUPUI Physiology Yard Exam 4 with this targeted guide,
designed to master foundational concepts in cellular function,
homeostasis, and neural signaling. This resource provides high-
yield practice questions and detailed explanations that
reinforce core principles for both lab and lecture assessments.
Which of the following statements is true?
A) Velocity of flow would be expected to decrease as the
cross sectional area of a blood vessel increases
B) Mean pressure in an artery would be expected to
decrease as a blood vessel vasoconstricts
C) All of these are true
D) Blood flow would be expected to increase as a blood
vessel vasoconstricts ...... ANSWER ....... A) Velocity of
flow would be expected to decrease as the cross
sectional area of a blood vessel increases.
In the contractile cells of the heart
, Page 2 of 75
A) Addition of calcium to the cytosol is necessary for
contraction
B) Voltage gated Ca2+ channels open at the start of an
action potential
C) The Na+-Ca2+ exchanger adds calcium to the cytosol
D) DHP opens ryanodine receptors in the sarcoplasmic
reticulum due to the action potential traveling down the T-
tubule ...... ANSWER ....... A) Addition of calcium to the
cytosol is necessary for contraction
In the conducting cells of the heart
A) T-type voltage gated Ca++ channels allow the pacemaker
potential to reach threshold
B) L-type voltage gated Ca++ channels produce a plateau
phase before repolarization
C) initiation of a pacemaker potential is stimulated by the
CNS
D) Voltage gated Na+ channels open at threshold for rapid
depolarization ...... ANSWER ....... A) T-type voltage
gated Ca++ channels allow the pacemaker potential to
reach threshold
, Page 3 of 75
Which of the following heart sounds is associated with final
filling of the ventricles?
A) 3rd sound, S3
B) 2nd sound, S2
C) 1st sound, S1
D) 4th sound, S4 ...... ANSWER ....... D) 4th sound, S4
Which of the following heart murmurs would be heard during
ventricular systole?
A) Stenotic SL valve
B) Both an insufficient SL valve and a stenotic AV valve
C) Insufficient SL valve
D) Stenotic AV valve ...... ANSWER ....... A) Stenotic SL
valve
Identify the portion of the ECG that represents the electrical
activity associated with atrial systole.
A) P wave
B) T wave
C) Atrial systole is not visible in an ECG
D) QRS complex ...... ANSWER ....... A) P wave
, Page 4 of 75
The QRS complex
A) represents the electrical activity associated with
ventricular repolarization
B) is a measure of the electrical activity initiated by the AV
node
C) will result in atrial repolarization
D)All of these ...... ANSWER ....... B) is a measure of the
electrical activity initiated by the AV node
In an ECG, which of the following is the electrical activity
associated with ventricular depolarization?
A) P wave
B) T wave
C) QRS complex
D) Ventricular systole is hidden within the P wave ......
ANSWER ....... C) QRS complex
Which of the following pairs is(are) a correct association of
electrical activity and resulting mechanical activity of the
heart?
A) T wave : passive filling
IUPUI PHYSIOLOGY 2025/2026 EXAM 4 BANK
CURRENTLY TESTING QUESTIONS AND DETAILED
CORRECT ANSWERS (VERIFIED) GUARANTEED
PASS/TOP-RATED A+.
IUPUI
Ace your IUPUI Physiology Yard Exam 4 with this targeted guide,
designed to master foundational concepts in cellular function,
homeostasis, and neural signaling. This resource provides high-
yield practice questions and detailed explanations that
reinforce core principles for both lab and lecture assessments.
Which of the following statements is true?
A) Velocity of flow would be expected to decrease as the
cross sectional area of a blood vessel increases
B) Mean pressure in an artery would be expected to
decrease as a blood vessel vasoconstricts
C) All of these are true
D) Blood flow would be expected to increase as a blood
vessel vasoconstricts ...... ANSWER ....... A) Velocity of
flow would be expected to decrease as the cross
sectional area of a blood vessel increases.
In the contractile cells of the heart
, Page 2 of 75
A) Addition of calcium to the cytosol is necessary for
contraction
B) Voltage gated Ca2+ channels open at the start of an
action potential
C) The Na+-Ca2+ exchanger adds calcium to the cytosol
D) DHP opens ryanodine receptors in the sarcoplasmic
reticulum due to the action potential traveling down the T-
tubule ...... ANSWER ....... A) Addition of calcium to the
cytosol is necessary for contraction
In the conducting cells of the heart
A) T-type voltage gated Ca++ channels allow the pacemaker
potential to reach threshold
B) L-type voltage gated Ca++ channels produce a plateau
phase before repolarization
C) initiation of a pacemaker potential is stimulated by the
CNS
D) Voltage gated Na+ channels open at threshold for rapid
depolarization ...... ANSWER ....... A) T-type voltage
gated Ca++ channels allow the pacemaker potential to
reach threshold
, Page 3 of 75
Which of the following heart sounds is associated with final
filling of the ventricles?
A) 3rd sound, S3
B) 2nd sound, S2
C) 1st sound, S1
D) 4th sound, S4 ...... ANSWER ....... D) 4th sound, S4
Which of the following heart murmurs would be heard during
ventricular systole?
A) Stenotic SL valve
B) Both an insufficient SL valve and a stenotic AV valve
C) Insufficient SL valve
D) Stenotic AV valve ...... ANSWER ....... A) Stenotic SL
valve
Identify the portion of the ECG that represents the electrical
activity associated with atrial systole.
A) P wave
B) T wave
C) Atrial systole is not visible in an ECG
D) QRS complex ...... ANSWER ....... A) P wave
, Page 4 of 75
The QRS complex
A) represents the electrical activity associated with
ventricular repolarization
B) is a measure of the electrical activity initiated by the AV
node
C) will result in atrial repolarization
D)All of these ...... ANSWER ....... B) is a measure of the
electrical activity initiated by the AV node
In an ECG, which of the following is the electrical activity
associated with ventricular depolarization?
A) P wave
B) T wave
C) QRS complex
D) Ventricular systole is hidden within the P wave ......
ANSWER ....... C) QRS complex
Which of the following pairs is(are) a correct association of
electrical activity and resulting mechanical activity of the
heart?
A) T wave : passive filling
