What parts of the body are included within the scope of chiropractic practice?

The scope of chiropractic practice primarily encompasses the spine, joints, muscles, and connective tissue. This focus is grounded in the understanding that various musculoskeletal conditions and neuromuscular issues typically originate in these areas. Chiropractors are trained to diagnose and treat a range of ailments associated with the musculoskeletal system, particularly how these elements relate to the nervous system.

By addressing misalignments or dysfunctions within the spine and other joints, chiropractors aim to restore proper function and promote the body's natural ability to heal itself. This holistic approach aligns with chiropractic principles that emphasize the interconnection between the nervous system and overall health.

The other options are not included within the typical scope of chiropractic practice. For instance, while the heart and lungs are critical components of the body, they fall under the domain of medical doctors and specialists who focus on internal medicine and cardiopulmonary health. The suggestion of a focus solely on the head and neck or the spine alone also misrepresents the breadth of conditions and anatomical areas that chiropractors are trained to manage. Thus, the correct choice highlights the comprehensive approach chiropractors take in caring for the musculoskeletal system.