Book One -- The things that sustain and support the entire body, and what braces and attaches them all. [the bones and the ligaments that interconnect them] | Chapter 15 On the Vertebrae of the Neck or Cervix

Joints made for movements of the head

The head is therefore endowed with its own motions, of which the first, which consists of flexion and return, is accomplished by means of the joint of the head with the first vertebra of the neck, for the head is flexed and returned above the first vertebra. 34 The second motion, by which the head is rotated, is accomplished above the second vertebra of the neck. For the head is rotated together with the first vertebra of the neck above the second, as if on an axle. 35 This is my opinion regarding the motions of the head and the joints, and you will very quickly learn how much it differs from the views of Galen. Whether it approaches closer to the truth you should determine from the construction of the bones, from the ligaments joining them, and the muscles moving them. I will describe the ligaments and muscles in the second book. In the present I shall address only the bones; perhaps in my discussion of them some mention of the ligaments as well may come in.



Book One -- The things that sustain and support the entire body, and what braces and attaches them all. [the bones and the ligaments that interconnect them] | Chapter 15 On the Vertebrae of the Neck or Cervix