I think it is abdominal muscles
A. Pacemaker cells located in the atria fire before the pacemaker cells in the ventricles. B. It takes time for hormones to diffuse from the atria to the ventricles to trigger contraction. C.The electrical signal generated in the right atrium is delayed at the AV node before passing to the ventricles. D.The ventricular muscle cells contract more slowly than the atrial muscle cells.
Answer:
4!
Explanation:
2 + 2 = 4
if u didnt know now you know! :)
<em><u>Answer:</u></em>
<em><u>Answer:i copied the answer below•</u></em>
<em><u>Answer:i copied the answer below•Explanation:</u></em>
<em><u>Heart disease, heart attack, high blood pressure and stroke. Sleep problems. Weight gain. Memory and concentration impairment.</u></em>
