Sacrum lumbar vertebra, and its lower part with the coccyx (tailbone) via the sacral and coccygeal cornua. The sacrum has three different surfaces which are shaped to accommodate surrounding pelvic structures. Overall it is concave (curved upon itself). The base of the sacrum, the broadest and uppermost part, is tilted forward as the sacral promontory internally. The central part is curved outward toward the posterior, allowing greater room for the pelvic cavity. In all other quadrupedal vertebrates, the pelvic vertebrae undergo a similar developmental process to form a sacrum in the adult, even while the bony tail (caudal) vertebrae remain unfused.
Down Where the Spirit Meets the Bone Down Where the Spirit Meets the Bone Down Where the Spirit Meets the Bone is Lucinda Williams' eleventh studio album. The double album was released on September 30, 2014. It is the first album on Williams' own Highway 20 Records label. The song "Compassion," from which the album title is derived, is based on a poem by her father, Miller Williams. It won the Americana Music Award for Album of the Year. In 2017, the song "When I Look at the World" was covered by Kaitlin Doubleday as her character Jessie Caine on season five of the TV series Nashville.