257.Type A enamel lamella are

a.poorly calcified rod segments
b.degenerated epethilial cells(unerupted teeth)
c.erupted teeth
d.none

Ans-poorly calcified rod segments

256.Palatogingival groove is present in

a.Maxillary central incisor
b.Maxillary lateral incisor
c.Mandibular central incisor
d.Mandibular lateral incisor

Ans-Maxillary lateral incisor

255.All are structures present in the lateral wall of cavernous sinus except

a.occulomotor nerve
b.trochlear nerve
c.maxillary nerve
d.abducent nerve

Ans-d.abducent nerve
Explanation-abducent nerve and internal carotid artery passes through centre of sinus.