TRUE IS UR ANSWER CUZ IT WILL HELP THEM WIT FUEL
Explanation:
The heart has four valves - one for each chamber of the heart. The valves keep blood moving through the heart in the right direction. The mitral valve and tricuspid valve are located between the atria (upper heart chambers) and the ventricles (lower heart chambers)
Answer:
it's uh yes
Explanation:
I just know because I am really bigbrain
Prolactin stimulates milk production.