Answer:
The “lub” is the first heart sound, commonly termed S1, and is caused by turbulence caused by the closure of mitral and tricuspid valves at the start of systole. The second sound,” dub” or S2, is caused by the closure of aortic and pulmonic valves, marking the end of systole.
Obsessive-compulsive because he does things at the same time
Answer:
This question is a week old I was about to help then I realized its age, do you still need help??
Explanation:
Answer:
People get addicted to painkillers because some doctors are too quick to prescribe drugs. However, we can’t only put the blame on doctors. Often times people misuse their prescriptions or lie about their pain to get more opioids. Anyone can become dependant on painkillers, but that doesn’t mean you need to stay dependent.
