fissure Synonyms

cleft chap crack cranny crevice scissure shole rip rupture space scarification slot slitter schism slit short circuit midbrain rime myelencephalon ope opening orifice peephole perforation pia mater pons puncture rabbet ravine rent rift rima split sulcate sulcus cerebrospinal fluid brain stem parietal lobe medulla oblongata rhombencephalon neopallium nullah optic chiasm pineal body pituitary body fractures crevices come apart archipallium tear