Development of the nervous system in humans optical vesicle (which will eventually become the optic nerve, retina and iris) forms at the basal plate of the prosencephalon. In the fifth week, the alar plate of the prosencephalon expands to form the cerebral hemispheres (the telencephalon). The basal plate becomes the diencephalon. The diencephalon, mesencephalon and rhombencephalon constitute the brain stem of the embryo. It continues to flex at the mesencephalon. The rhombencephalon folds posteriorly, which causes its alar plate to flare and form the fourth ventricle of the brain. The pons and the cerebellum form in the upper part of the rhombencephalon, whilst the medulla oblongata forms
If We Are the Body Are the Body" live in concert. At a concert on April 1, 2005 at Giant Center in Hershey, Pennsylvania, the band opened up their set list with the song. At a concert on November 12, 2005 at the Stabler Arena in Bethlehem, Pennsylvania, they performed it as the third song on their set list. They performed the song at a concert held on March 22, 2008 at Jacksonville Veterans Memorial Arena in Jacksonville, Florida. Casting Crowns performed "If We Are the Body" as the second song on their set list at their February 4, 2010 concert at Sprint Center in