Why does a coroner have to "pop" the liver before taking the body?

Question

so, i was watching the movie, killswitch and wondered why did the coroner stick an object to "pop the liver.?" It was the murder scene of the guy on the desk. .

Answer 1

It was probably a thermometer which he used to find the temperature of the liver. From that they can estimate the time of death based on the surrounding air temperature.