Navigation » List of Schools » California State University, Fullerton » Biology » Biol 362 – Mammalian Physiology » Fall 2021 » Quiz 4
Below are the questions for the exam with the choices of answers:
Question #1
A are used to diagnose heart murmurs
B measure the mechanical activity of the heart
C provide direct information about heart function
D show the summed electrical activity generated by all cells of the heart
Question #2
A increasing, decreasing
B increasing, increasing
C decreasing, increasing
D decreasing, decreasing
Question #3
A the atria must be in diastole but the atrial pressure must be lower than the veins
B the AV valves must be open
C the atria must be in diastole
D the ventricles must be completely empty
Question #4
A Autorhythmic cells
B sarcomeres
C Atrium
D myocardium
Question #5
A blood is entering the ventricles
B the pressure in the ventricles declines
C the atria are contracting
D the AV valves are closed
Question #6
A increased contractile strength
B decreased force of contraction
C increased sensitivity to acetylcholine
D decreased rate of contraction
Question #7
A during the ST segment
B during the first part of the P wave
C just after the Q wave
D just after the T wave
Question #8
A semilunar valves
B Atrium
C AV valves
D SA node
Question #9
A the second heart sound is recorded as the QRS complex of the ECG
B the P wave of the ECG occurs between the first and third heart sounds
C the QRS complex of the ECG comes before the increase in ventricular pressure
D the greatest increase in ventricular pressure occurs during the filling phase
Question #10
A TRUE
B FALSE
Question #11
A transmits electrical activity from the atria to the ventricles
B forces electrical activity to be conducted through the atrioventricular node
C helps guide the blood into the proper chambers in sequence
D directs the flow of blood into the arteries
Question #12
A end-diastolic volume (EDV)
B cardiac output (CO)
C end-systolic volume (ESV)
D stroke volume (SV)
Question #13
A acetylcholine does not act on the heart
B increasing ion influx, thus increasing the rate of depolarization
C increasing the permeability to K+ and decreasing the permeability to Ca2+
D increasing the permeability to Ca2+
Question #14
A sodium and potassium channels are always open
B unstable membrane potentials
C a net influx of sodium
D prolonged calcium influx
Question #15
A cardiac output (CO)
B end-diastolic volume (EDV)
C heart rate (HR)
D end-systolic volume (ESV)
Question #16
A difference between the end0diastolic volume and end-systolic volume
B stroke volume minus the end-systolic volume
C blood stored within the veins
D product of heart rate and stroke volume
Question #17
A the P wave develops
B ventricular systole occurs
C blood is ejected from the atrium
D the SA node fires
Question #18
A both calcium and potassium
B only sodium
C only calcium
D only potassium
Question #19
A have organized sarcomeres
B are also called pacemakers because they set the rate of the heartbeat
C contribute to the force of contraction
D are the same size as myocardial contractile cells
Question #20
A potassium only
B sodium and potassium
C sodium only
D calcium only
Question #21
A the progressive wave of ventricular depolarization
B repolarization of the atria
C depolarization of the atria
D repolarization of the ventricles
Question #22
A only decreases the force of a contraction
B allows more calcium to enter and increase the force of contraction
C only allows more calcium to enter
D only increases the force of contraction
Question #23
A venous return
B end-diastolic volume
C heart rate
D myocardium thickness
Question #24
A the semilunar valves close
B the semilunar valves open
C the AV valves open
D the AV valves close
Question #25
A the QRS is just starting
B the semilunar valves are closed
C blood is forced into the veins
D the ventricles are in systole