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:
because don’t Know that you are making them proud, all parents are like that and no one could change that answer. It also could be that you are old enough or a teen.
Explanation:
Contact
Explanation:
Pathogens can be spread a few ways depending on what type. They could be spread through skin contact, airborne particles, body fluids, contact with feces, and touching a surface touched by an infected person.
Answer:
1. aneamia
2.he should eat food rich in the mineral iron