In systole, you should expect that your mitral valve and tricuspid valve to be closed (snap shut) and you should expect your pulmonary valve and aortic valve to open. Hope this helps
the nutrients from chicken noodle soup can aid with that support system. studies have shown that a hearty bowl of chicken soup may help you to clear nasal congestion and have a mild anti-inflammatory effect that can help ease cold symptoms
Only condoms can protect against an STI. Only condoms have been proven to reduce the risk of getting some STDs. According to the HHS Office on Women's Health, the male latex condom is the best method for protecting against STDs, including HIV/AIDS. Polyurethane condoms are an effective alternative if either partner has a latex allergy.
The Answer to the question
A. Nitrogen
