segments are included. The MCA branches may bifurcate or sometimes trifurcate into trunks in this segment which then extend into branches that terminate towards the cortex.
*M3: The opercular segment, extending laterally and exteriorly from the insula towards the cortex. This segment is sometimes grouped with M2.
*M4: These finer terminal or cortical segments irrigate the cortex. They begin at the external margins of the Sylvian fissure and extend distally away on the cortex of the brain.

The M2