Although the Heart Beats Without Nervous Innervation, Can Modify the Heart

Question

Although the heart beats without nervous innervation, can modify the heart rate.
A) hormones
B) various chemicals and ions
C) impulses from the autonomic nerves
D) impulses from the autonomic nerves, hormones, and various chemicals and ions

Accepted Answer

The heart rate can be modified by impulses from the autonomic nerves, hormones, and various chemicals and ions, all of which can influence the heart's intrinsic rhythm.