McCoy: [probing Chekov’s head] Tearing of the middle meningeal artery...
Doctor #1: What’s your degree in, dentistry?
McCoy: How do YOU explain slowing pulse, low respiratory rate and coma?
Doctor #1: Fundascopic examination!
McCoy: Fundascopic examination is unrevealing in these cases!
Doctor #1: A simple evacuation of the epidural hematoma will relieve the pressure!
McCoy: My God man, drilling holes in his head is not the answer! The artery must be repaired! Now, put away your butcher’s knives and let me save this patient before it’s too late!
That Trek IV scene popped into my mind as well.
But also the old lady on dialysis that McCoy gives a pill to and a scene later is yelling “Doctor grew me a new kidney ... Doctor grew me a new kidney!”