[Solved] Which of the following was not a feature the first settlers of Jamestown observed about the neighboring tribes? A)their body and face paints B)their relative nakedness C)their religious ceremonies D)their unrestrained aggression against the new arrivals. Spinalis Thoracis: A part of the erector spinae muscle group located along the thoracic spine, assisting in extending the vertebral column. Spinalis Cervicis: A neck muscle that is part of the spinalis muscle group, responsible for extending and stabilizing the cervical spine. External Anal Sphincter: A muscle that surrounds the anus, controlling the expulsion of feces from the body. Levator Ani Iliococcygeus: A component of the levator ani muscle, which supports the pelvic organs and helps in maintaining fecal continence.