KIN 2YY3 Test – 1 Heart Questions With Complete
Solutions
Anterior Interventricular Sulcus Correct Answers marks the
boundary between the ventricles anteriorly
At what stage does pressure rise in both ventricle and atrium?
Correct Answers Active ventricular filling
Atrial systole Correct Answers Ventricular filling as AV
valves opened, the blood goes from the atria to the ventricle
active ventricular filing, phase 1
Auricles & trabeculae cearnae Correct Answers reduce
suction, provide more surface area; more friction
AV bundle Correct Answers hole in cardiac skeleton to reach
interventricular septum
AV node Correct Answers Slowest conduction of the heart,
ventricles are signaled to contract after atria
Bundle of His (AV bundle) Correct Answers where the signal
moves from node to the ventricle, splits into the left and right
Calcium induced Calcium released Correct Answers Calcium
binds to the SR which causes more calcium to inflow and this
causes sustained contraction
, Cardiac Muscle: Key components Correct Answers Less
nuclei, nuclei on the sides, striations can not be seen, contains
actin & myosin myofilaments,
Chordae tendinare Correct Answers tendon tissue that attached
the atria to the ventricles
Coronary Sulcus Correct Answers Encircles heart and marks
the boundary between the heart atria & ventricles goes around
the entire heart
Describe the Action Potential in Cardiac Muscles Correct
Answers Start at one cell, move cell to cell, start at -90 mV,
rapid depolarization using Na+, plateua as K+ outflow and Ca2+
inflow, ca2+ closes
Describe the state of the contracted heart Correct Answers
Blood is being ejected from the ventricles; atria will contract
slightly before the ventricle, pressure in ventricle & closes the
bicuspid valve, aorta loses pressure and allows the semilunar
valve to be pushed open
Describe the state of the dilated heart? Correct Answers Blood
is coming back from the lungs into the left atrium, there is low
pressure in the ventricle, the aortic semilunar valve is closed
because there is high pressure in the aorta
Diastole Correct Answers relaxation, as it fills with blood
Solutions
Anterior Interventricular Sulcus Correct Answers marks the
boundary between the ventricles anteriorly
At what stage does pressure rise in both ventricle and atrium?
Correct Answers Active ventricular filling
Atrial systole Correct Answers Ventricular filling as AV
valves opened, the blood goes from the atria to the ventricle
active ventricular filing, phase 1
Auricles & trabeculae cearnae Correct Answers reduce
suction, provide more surface area; more friction
AV bundle Correct Answers hole in cardiac skeleton to reach
interventricular septum
AV node Correct Answers Slowest conduction of the heart,
ventricles are signaled to contract after atria
Bundle of His (AV bundle) Correct Answers where the signal
moves from node to the ventricle, splits into the left and right
Calcium induced Calcium released Correct Answers Calcium
binds to the SR which causes more calcium to inflow and this
causes sustained contraction
, Cardiac Muscle: Key components Correct Answers Less
nuclei, nuclei on the sides, striations can not be seen, contains
actin & myosin myofilaments,
Chordae tendinare Correct Answers tendon tissue that attached
the atria to the ventricles
Coronary Sulcus Correct Answers Encircles heart and marks
the boundary between the heart atria & ventricles goes around
the entire heart
Describe the Action Potential in Cardiac Muscles Correct
Answers Start at one cell, move cell to cell, start at -90 mV,
rapid depolarization using Na+, plateua as K+ outflow and Ca2+
inflow, ca2+ closes
Describe the state of the contracted heart Correct Answers
Blood is being ejected from the ventricles; atria will contract
slightly before the ventricle, pressure in ventricle & closes the
bicuspid valve, aorta loses pressure and allows the semilunar
valve to be pushed open
Describe the state of the dilated heart? Correct Answers Blood
is coming back from the lungs into the left atrium, there is low
pressure in the ventricle, the aortic semilunar valve is closed
because there is high pressure in the aorta
Diastole Correct Answers relaxation, as it fills with blood
