Damage to the sinoatrial node in humans A) is a major ...

[luvbio]

Damage to the sinoatrial node in humans
A)  is a major contributor to heart attacks.
B)  would block conductance between the bundle branches and the Purkinje fibers.
C)  would have a negative effect on peripheral resistance.
D)  would disrupt the rate and timing of cardiac muscle contractions.
E)  would have a direct effect on blood pressure monitors in the aorta.

[coco]

Choose D

GL