AFAA Personal Trainer Certification Practice Exam

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What is the purpose of the coccygeal spine?

Support the torso
Assist in hip flexion
Form the tailbone
Stabilize the neck

The correct answer is: Form the tailbone

The coccygeal spine, commonly referred to as the coccyx or tailbone, serves a specific role in human anatomy. Its primary purpose is to act as a remnant of a tail from our evolutionary ancestors. It is located at the base of the vertebral column and consists of three to five fused vertebrae. This structure provides attachment for various muscles, tendons, and ligaments, contributing to the stability of the pelvic region. The coccyx plays a vital role in supporting pelvic organs and can provide some support when sitting, although it is not the main support structure for the torso or a contributor to hip flexion. Additionally, it is not involved in stabilizing the neck, which is the function of cervical vertebrae. The coccygeal spine is primarily recognized for its role as the tailbone, highlighting its significance in human anatomy as a point of attachment and support in the pelvic area.