BIOL215 Cardiovascular System: Heart Part 2 Exam 1

What Ions are prevalent inside of the EC

Sodium, Calcium

What ions are prevalent outside of the IC

Potassium

What happens to the voltage in depolarization

voltage rises (towards zero)

What happens to the voltage in repolarization

Voltage falls (back to resting potential)

What is the Threshold in action potentials

level at which an action potential is generated

What cells are autorhythmic?

Conducting cells

What cell is self-contracting?

Autorhythmic cells

Where does depolarization from the P-Wave take place

The Atrial Myocardium

What wave does the onset of atrial contraction occur

The P-Wave

What complex causes ventricular depolarization

The QRS complex

What part of the electrocardiogram causes the onset of ventricular contraction

The QRS complex causes ventriular contraction

What Wave causes the repolarization of ventricles

the T-Wave

What part of the electrocardiogram precedes ventricular relaxation

The T-wave

What happens during Atrial Systole

Active ventricular filling

What happens during Ventricular Systole

Period of Isovolumetric contraction

What happens during Ventricular Systole Part 2

Period of ejection

What happens during Ventricular Diastole

Period of isovolumetric relaxation

What happens during Ventricular Diastole Part 2

Passive Ventricular filling

What is the first heart sound called?

Lubb

What is the second heart sound called?

Dupp