2. When the left ventricle relaxes, the aortic valve closes and the mitral valve opens. This lets blood flow from the left atrium into the left ventricle.
4. Quickly shocking the heart with an automated external defibrillator (AED) can save a person's life after cardiac arrest. An AED is a portable, battery-operated device that a bystander can use. It checks the heart rhythm and can send an electric shock to the heart to try to restore a normal rhythm.
5. High blood pressure can damage your arteries by making them less elastic, which decreases the flow of blood and oxygen to your heart and leads to heart disease. In addition, decreased blood flow to the heart can cause: Chest pain, also called angina.
hope this helps :)
 
        
             
        
        
        
<span>Blood pressure is the force of your blood pushing against the walls of your arteries.</span>
        
             
        
        
        
Answer:
True... because bonds must be broken before the atoms can be formed into new bonds.
<em>Hope this helps! Please let me know if you need more help or think my answer is incorrect. Brainliest would be MUCH appreciated. Have a wonderful day!</em>
 
        
             
        
        
        
You could be dehydrated or be taking medication with side effects
        
             
        
        
        
Answer: D) an outline of who is responsible for different components of a disaster plan
edge 2020