You aren't thinking systemically.

Death is a process, and things happen in a set order. A stab wound creates trauma to anyone of several systems. It may cause outside air to enter the pulmonary system, e.g. a "sucking chest wound"; it may cause arterial or vascular bleeding, and if not stopped would cause failure of pulmonary and cardiac systems; it could cause catastrophic failure in the digestive, renal, neurological, etc., systems, depending on the location of the stab wound.

Cessation of the respiratory system causes ensuing failure of several other systems - Neurological, failure to feed arterial/vascular to the cardiologic system, etc.

The underlying cause would be a stab wound.

Though done with a D800, my exposure/processing is similar when using my D850, or any other digital sensor I use. Rongnongno touched on this in his reply. Personally, I ignore the histogram shown in the camera. I do pay attention to it during processing. Additionally, the camera histogram is derived from the jpg processed in-camera. Using exposure to place the brightest part of a scene in its appropriate Zone (based on the specific camera being used) allows the camera to capture its usable Dynamic Range.
--Bob