TMJ develops at the age of
(A) 18 weeks (B) 10 weeks (C) 6 weeks (D) 29 weeks
(B) TMJ develops at 8-12 weeks of gestation. It is the last joint to develop in the body.
The work in the above quoted article establishes three phases in TMJ development:
(1) the blastematic stage (weeks 7-8 of development);
(2) the cavitation stage (weeks 9-11 of development); and
(3) the maturation stage (after week 12 of development).
This study identifies the critical period of TMJ morphogenesis as occurring between weeks 7 and 11 of development.