Lecture Quiz #5

Open ________ ion channel(s) are responsible for rapid initial repolarization in cardiac muscle cell action potentials.

Decreasing the number of ryanodine receptors will ______ the release of intracellular stores of calcium.

The opening of _________ ion channel(s) are responsible for rapid late repolarization in cardiac muscle cell action potentials.

If you decrease your stroke volume (SV), you will _______ your cardiac output. (CO)

Changes in ________ will cause sarcomeres to ______ in length to alter cardiac output.

Tachycardia is a(n) ________ in heart rate.

___________ is the load imposed on the heart before contraction.

Increasing the number of positively charged ions enter the cell would _______ the rate of depolarization.

Decreasing the number of positively charged ions leaving the cell would ________ the rate of repolarization.

The opening of _________ ion channel(s) are responsible for depolarization in cardiac muscle cell action potentials.

If you increase your stroke volume (SV), you will _________ your cardiac output (CO).

Tachycardia will cause a(n) ________ in cardiac output.

The QRS complex corresponds to what event?

If you increase your cardiac output (CO), you will _________ your blood pressure. (BP)

Dehydration would cause the fluid matrix or plasma to have a(n) __________ in viscosity to __________ peripheral resistance.

Decreasing energy or ATP within a cell would ________ the rate of repolarization.

___________ is the load imposed on the heart after contraction.

The first heart sound (lub) occurs as the _____ valves ________, and the second heart sound (dup) occurs as the ________ valves ________

Bradycardia will cause a(n) ________ in cardiac output.

_________ refers to the time point when the ventricles of the heart contract, and __________ refers to the time point when the ventricles of the heart relax.