Answer:
your answer would be sinus node (also called the sinoatrial node, or SA node).
Explanation:
They include injectables (such as Depo-Provera), oral contraceptive pills, patch, ring and the diaphragm. The least effective<span> methods result in 18 or more pregnancies per 100 women in a year, with typical use. They include male and female condoms, withdrawal, sponge, fertility-awareness-based methods, and spermicide.</span>
Its true alcohol causes bad reactions to the heart and blood reproduction and circulation
