1. Fig. 4. Type 2 of angulation in A3
Fig. 4. Type 2 of angulation in A3. The A1 and A2 bends are right angle and obtuse respectively. Note that the A3 is slightly obtuse where as A4 is highly acute. The black bands demarcate different parts of ICA. ICA, internal carotid artery; P-ICA, petrous part of ICA; C-ICA, cavernous part of ICA; A1, first angle of petrous segment; A2, second angle of petrous segment; A3, first angle of cavernous segment; A4, second angle of cavernous segment.
Fig. 4. Type 2 of angulation in A3. The A1 and A2 bends are right angle and obtuse respectively. Note that the A3 is slightly obtuse where as A4 is highly acute. The black bands demarcate different parts of ICA. ICA, internal carotid artery; P-ICA, petrous part of ICA; C-ICA, cavernous part of ICA; A1, first angle of petrous segment; A2, second angle of petrous…
Anat Cell Biol Sep;50(3):