Well, in many morgue horror stories, there's often a sense of isolation. The morgue attendant or whoever is in the morgue is alone, which makes the situation scarier. There can be unexplained phenomena, such as lights flickering or equipment malfunctioning for no apparent reason. Also, the idea of the dead coming back to life in some way, whether it's a false alarm like a body twitching due to some natural post - death reaction or something more supernatural. And the cold, dim lighting in the morgue is a common element that sets the mood for horror.
One common element is the presence of the dead bodies themselves. Just the sight of them can create an eerie atmosphere. Another is the cold and sterile environment of the morgue, which adds to the sense of dread. Strange noises are also often a part of it, like creaking doors or unexplained moans. And sometimes, there are elements of the supernatural, like ghosts or unexplained movements of the bodies.
Common elements in morgue horror stories include the morgue's physical layout. Narrow corridors, cold storage chambers, and dim lighting all contribute to the horror. There is also the fear of the unknown. The bodies in the morgue have often met tragic ends, and the idea that there could be some sort of lingering energy or spirit associated with them is a frequent theme. Additionally, the presence of medical equipment, which can seem menacing in the context of a horror story. For example, the autopsy tables and the tools used for dissection can be quite terrifying, especially when combined with strange occurrences like a body sitting up suddenly while on the table or the tools moving on their own.