Answer:
D) four.
Explanation:
The two atria hold the blood that circulates away from the heart. The heart has four one-way valves, which open and close with each heartbeat. The tricuspid valve and the mitral valve are located between the atria and allow the blood to flow from the atria to the ventricles. Also you don't have to but mind marking Brainliest?
i would think it would be A because sometimes the deadlines for things are to close and it could make you feel overwhelmed
1. modifying your exercise routine, <span>testing your new ability level, and
setting new, realistic goals
2. </span>holding your knees to your chest in a stretch
3. avoid exercises with excess repetition
4. because they are caused by your exercise
5. Tendonitis
6. <span>lack of motivation</span>
7. False
