Blood passes through a valve as it leaves each chamber of the heart. The valves prevent the backward flow of blood. They act as one-way inlets of blood on one side of a ventricle and one-way outlets ...

One of the biggest surprises is the addition of Channing Tatum to the cast. Tatum played fan-favorite X-Men character Gambit in last year's smash hit Deadpool & Wolverine, and is now confirmed to ...