Directed by: Jose Padilha
Starring: Gary Oldman, Michael Keaton, Abbie Cornish, Jackie Earle Haley, Joel Kinnaman
Continuity mistake: During the gunfight in the arms dealer's hideout, Robocop enters brandishing his futuristic 'M2 Battle Rifle' which then immediately changes to an MP7 in the next shot. This error gets particularly blatant during the following shots from his POV, where he's shown still firing the M2 in his HUD, only for the scene to immediately cut to show him firing the MP7.
Factual error: When they show Alex's partner in the hospital his heart rate is showing 35 on the monitor. His heart rate is not that low from the EKG pattern.
Raymond Sellars: What is bigger than a hero?
Rick Mattox: A dead hero.
Question: How can Murphy still be alive if he doesn't have a heart?
Answer: Watch again the scene (s), especially close to the end when his armor is reverted to silver and just between his lungs; his heart is just behind his lungs and beating, though if you blink you might miss it.
Except the heart is located in front of the lungs, not behind them.
Why Murphy's heart isn't where it should be in a normal human is up to speculation-perhaps the transformation into a cyborg necessitated it's being repositioned, perhaps. The heart is there, though.
Normally, yes, but who's to say they didn't have a reason to move it behind his lungs when they rebuilt him?
Chosen answer: He most likely has an artificial heart or some type of system that circulates his blood, this system doesn't necessarily have to take the shape of a typical human heart. However if his biological heart is still functional, it may be behind the lungs.