Physiology IUPUI
IUPUI Physiology Exam 4 Study Questions
with Answers 2026
chamber of the heart responsible for pumping blood into pulmonary circulation -
Correct Answers ✔-right ventricle
True or False
Diastolic refers to contraction of heart muscle -Correct Answers ✔-false
True or False
An ECG is a tracing of an AP of a cardiac muscle cell -Correct Answers ✔-false
Is there pressure when dealing with fluids? -Correct Answers ✔-Yes! Always
resistance= -Correct Answers ✔-resisting flow
flow rate -Correct Answers ✔-volume/time (L/min) (mL/min)
velocity of flow -Correct Answers ✔-distance/time (cm/min) (mm/sec)
the unit Q refers to... -Correct Answers ✔-flow rate
In Cardiac Myofiber Excitation Contraction Coupling,
letting Ca 2+ in does what? -Correct Answers ✔-activates the Sarcoplasmic
Reticulum
force developed= -Correct Answers ✔-# of cross bridges
Frank Starlings Law show the ______________ relationship between length and
force -Correct Answers ✔-proportional
Physiology IUPUI
,Physiology IUPUI
rapid depolarization is the result of... -Correct Answers ✔-voltage gated Na+
channels
the benefit of no cardiac muscle tetanus... -Correct Answers ✔-allows the heart to
act autorythmically, not reliant on the build of up force in order to reach an AP--
>contract
contracting--> -Correct Answers ✔-muscle cells
conducting--> -Correct Answers ✔-autorhythmic cells
what 2 things need to happen for a cardiac muscle cell to reach threshold? -Correct
Answers ✔-1. pace maker potential (I subset f)
2. T-Type voltage gated Ca 2+ channels
T/F
Pace maker potential will take you all the way up to threshold potential -Correct
Answers ✔-F
you need the pacemaker potential first, then the T-Type voltage gated Ca 2+
channels to take you the extra distance
What is special about "Funny Channels"? -Correct Answers ✔-They allow
movement of both Na+ and K+
What is the general rule of thumb when considering the movement of Na+ and K+
-Correct Answers ✔-Na+ > K+
which of the following ion channel and cell type is paired correctly?
a) I(f) voltage gated Na+ channels: contracting myofiber
b) T type voltage gated Ca2+ channels: contracting fibers
c) L type voltage gated Ca2+ channels: conduction fiber
d) all are correctly paired -Correct Answers ✔-c) L type voltage gated Ca2+
channels: conduction fiber
Physiology IUPUI
, Physiology IUPUI
!!! rule
______ drives ______ -Correct Answers ✔-electrical, mechanical
Difference between ECG and EKG -Correct Answers ✔-None!
P wave -Correct Answers ✔-atrial depolarization
P wave mechanical function -Correct Answers ✔-systole
QRS complex -Correct Answers ✔-ventricular depolarization
QRS complex mechanical function -Correct Answers ✔-systole
T wave -Correct Answers ✔-ventricular repolarization
T wave mechanical function -Correct Answers ✔-diastole
cardiac cycle -Correct Answers ✔-all electrical and mechanical events that occur
from the onset of one heartbeat--->heartbeat--->heartbeat (etc.)
In the cardiac cycle, the P wave of the ECG represents... -Correct Answers ✔-atrial
depolarization
SV -Correct Answers ✔-stroke volume
Stroke volume is.... -Correct Answers ✔-the amount pumped out by the ventricles
@rest SV -Correct Answers ✔-70 mL
EDV -Correct Answers ✔-end diastolic volume
Physiology IUPUI
IUPUI Physiology Exam 4 Study Questions
with Answers 2026
chamber of the heart responsible for pumping blood into pulmonary circulation -
Correct Answers ✔-right ventricle
True or False
Diastolic refers to contraction of heart muscle -Correct Answers ✔-false
True or False
An ECG is a tracing of an AP of a cardiac muscle cell -Correct Answers ✔-false
Is there pressure when dealing with fluids? -Correct Answers ✔-Yes! Always
resistance= -Correct Answers ✔-resisting flow
flow rate -Correct Answers ✔-volume/time (L/min) (mL/min)
velocity of flow -Correct Answers ✔-distance/time (cm/min) (mm/sec)
the unit Q refers to... -Correct Answers ✔-flow rate
In Cardiac Myofiber Excitation Contraction Coupling,
letting Ca 2+ in does what? -Correct Answers ✔-activates the Sarcoplasmic
Reticulum
force developed= -Correct Answers ✔-# of cross bridges
Frank Starlings Law show the ______________ relationship between length and
force -Correct Answers ✔-proportional
Physiology IUPUI
,Physiology IUPUI
rapid depolarization is the result of... -Correct Answers ✔-voltage gated Na+
channels
the benefit of no cardiac muscle tetanus... -Correct Answers ✔-allows the heart to
act autorythmically, not reliant on the build of up force in order to reach an AP--
>contract
contracting--> -Correct Answers ✔-muscle cells
conducting--> -Correct Answers ✔-autorhythmic cells
what 2 things need to happen for a cardiac muscle cell to reach threshold? -Correct
Answers ✔-1. pace maker potential (I subset f)
2. T-Type voltage gated Ca 2+ channels
T/F
Pace maker potential will take you all the way up to threshold potential -Correct
Answers ✔-F
you need the pacemaker potential first, then the T-Type voltage gated Ca 2+
channels to take you the extra distance
What is special about "Funny Channels"? -Correct Answers ✔-They allow
movement of both Na+ and K+
What is the general rule of thumb when considering the movement of Na+ and K+
-Correct Answers ✔-Na+ > K+
which of the following ion channel and cell type is paired correctly?
a) I(f) voltage gated Na+ channels: contracting myofiber
b) T type voltage gated Ca2+ channels: contracting fibers
c) L type voltage gated Ca2+ channels: conduction fiber
d) all are correctly paired -Correct Answers ✔-c) L type voltage gated Ca2+
channels: conduction fiber
Physiology IUPUI
, Physiology IUPUI
!!! rule
______ drives ______ -Correct Answers ✔-electrical, mechanical
Difference between ECG and EKG -Correct Answers ✔-None!
P wave -Correct Answers ✔-atrial depolarization
P wave mechanical function -Correct Answers ✔-systole
QRS complex -Correct Answers ✔-ventricular depolarization
QRS complex mechanical function -Correct Answers ✔-systole
T wave -Correct Answers ✔-ventricular repolarization
T wave mechanical function -Correct Answers ✔-diastole
cardiac cycle -Correct Answers ✔-all electrical and mechanical events that occur
from the onset of one heartbeat--->heartbeat--->heartbeat (etc.)
In the cardiac cycle, the P wave of the ECG represents... -Correct Answers ✔-atrial
depolarization
SV -Correct Answers ✔-stroke volume
Stroke volume is.... -Correct Answers ✔-the amount pumped out by the ventricles
@rest SV -Correct Answers ✔-70 mL
EDV -Correct Answers ✔-end diastolic volume
Physiology IUPUI
