Heart
This is the resting heart rate. (bpm)
What are 70-75 beats per minute?
Ion that drives the action potential.
What is Calcium?
This cell experiences ventricular myocyte action potential.
What is the contractile cell?
The term that describes the heart beating on its own.
What is autorhythmicity?
The bigger side of the heart.
What is the left side?
The term describing how specialized cardiocytes for initiation and propagating action potentials that trigger contraction of other cells.
what is the conduction system?
This is the typical threshold for the SA node action potential.
What are -35 mV?
The resting potential of a ventricular myocyte.
What are -90mV?
These are 2 parts of the cardiac conduction system.
What are
Interatrial pathway, SA node, Internodal pathway, right branch of bundle of His, AV node, left branch of bundle of His, purkinje fibers
?
This artery is the first one that leads deoxygenated blood to lungs.
What is the pulmonary artery?
This heart sound is louder.
What is the first heart sound?
This voltage gated channel causes repolarization of the SA node.
What is K+?
This drives depolarization of the heart.
What is the influx of Na+?
This is the origin of cardiac excitation?
What is the SA node?
This is also known as the pacemaker of the heart.
What is the SA node?
This cell is responsible for mechanical action of pumping.
What is the contractile cell?
This calcium channel causes rapid depolarization of the action potential.
What is L-type?
This type of calcium channel is long lasting and causes a plateau potential.
What is the L-type calcium channel?
What is the AV delay?
These structures carry the signals through the ventricles.
What are the purkinje fibers?
This is what the second heart sound is caused by.
What is the surge of blood hitting against closed semilunar valve?
This current is the cellular basis for the control of the heart rate.
What is a funny current?
The opening of this channel causes initial repolarization.
What is the K+ channel?
In these parts of the cardiac conduction system, signals can accelerate to speeds of up to 4 meters per second, facilitating near-simultaneous contraction of the heart chambers.
What are the AV bundle of His and Purkinje fibers?
This encircles the heart near the base and separates the atria from the ventricles.
What is the coronary sulcus?