<prompt> Which of the following Fontanelle is the last to close:Anterior fontanellePosterior FontanelleAnterolateral fonatnellePosterolateral fontanelle  <response>: The anterior fontanelle is the last to close around the middle of the second year 18 months. The anterior fontanelle is also the most impoant because it is the largest and last to close. Sequence of Fontanelle closure : Posterior fontanelleLambdoid : 2-3 months Anterolateral FontanelleSphenoidal: 6 months Posterolateral Fontanelle Mastoid: 6-18 months Anterior FontanelleBregmatic: 18 months Reference : Ghai essentials 9th edition Pg no : 10 