Heartbeat is accelerated by

The rate of heartbeat is regulated by the integrated activity of inhibiting and accelerating effects occuring in which part of the brain ?

The rate of heartbeat is regulated by the integrated activity of inhibiting and accelerating effects occuring in which part of the brain ?

The rate of heartbeat is regulated by the integrated activity of inhibiting and accelerating effects occuring in which part of the brain ?

Regulation and initiation of heartbeat is indicated by .........

Rate of heartbeat is determined by

Rate of heartbeat is determined by

Heartbeats are affected by

In man, heartbeat is intiated by

The heartbeat is measured by an instrument called