What Is the Cervical Spine? Where Is the Cervical Spine Located? A long, flexible column extending through most of your upper body, the spinal column consists of seven bones called vertebrae. The ...

Flexion or extension of a certain body part typically refers to joints. Flexing a joint usually means closing it, and decreasing the angle between the body parts, while extending a joint means opening ...

Flexion and extension refer to directions of motion that affect the angle of a joint. Flexion is when the joint is closed, while extension is when it is opened. Flexion and extension are the two ...