If Left to Its Own Devices, the Heart Would Beat

Multiple Choice

If left to its own devices, the heart would beat at a rate of around 100 beats per minute. This phenomenon is due to the fact that the SA node in the heart has the ability to self-stimulate - it will depolarize and repolarize without outside influence. Fortunately, the heart is constantly tweaked by both sympathetic and parasympathetic systems in response to environmental cues. Which of the following are the CHIEF nerves responsible for transmitting parasympathetic messages to the heart?

A) Cardiac accelerator nerves
B) Cardiac decelerator nerves
C) Vegas nerves
D) Tidal nerves