Exam 17: Cardiac Function

A requirement for rhythmicity is that the cell membrane has channels that automatically open during phase 3.

The R wave is responsible for apical depolarization.

At very high heart rates,cardiac output

Which proteins are associated with the thin filament in the cardiac muscle? (Select all that apply.)

One role of ATP in cardiac muscle contraction is

Creatine phosphate is

While caring for a geriatric patient,the changes in the heart that may be expected include