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?
Wash his hands if she wants you to be that specific
I think it would be to alert the parents. for his protection, it shouldn't be secret. The nurse shouldn't honor the confidentiality of the situation.
