Medical stuff PLEASE ANSWER!!!?

Question

what is the term for the process of making an incision into the skull?

Answer 1

craniotomy. Trephanation makes burr holes into the skull.

Answer 2

Craniotomy, where a bone flap is removed and replaced after surgery is completed.  Most brain surgery is done this way.  It can be  is distinguished from craniectomy, in which the skull flap is not replaced.

Trepanation (or trepanning, trephination, trephining or burr hole) involves drilling holes through the skull to place intracranial pressure monitors, to relieve pressure, or to do biopsies or place brain stimulator leads.

Answer 3

craniectomy

Answer 4

Trepanation.