
Learning artistic anatomy? The spine is a good place to start.

The colored blocks are 3d models I made for myself in Maya. The drawings are from 19th century anatomist Dr. Paul Richer and are quite accurate.
I broke the spine into its working parts, the cervical (neck) vertebrae in green, the thoracic (ribcage) vertebrae -- which hardly move at all -- in red, and the lumbar (lower back) vertebrae in blue.
It's important to capture the curve of the spine. Its curve comes from its function. Whenever it supports something, the spine wants to be in the center, directly underneath the load, like a stick under a candy apple. See how it swoops under the rib cage, and again how it swoops under the head, to better support their weight.
The vertebrae get progressively larger the lower you go, the better to support the increasing weight.
Notice how deep inside the rib cage the spinal column really is. That's because the ribs curve off the spine not as simple hoops, but more as a pair of arches, similar to the form of the top of a valentine's day heart.

hello, I read your article abo!t havig a skeletn on Posre, I look for it but do not find it... Could you help me?
best regards
thomas
Thomas,
The Poser skeleton can be hard to find. It's not under "Content." That's where you go to buy new content.
I made a screenshot for you of where the skeleton can be found in Poser 6. It's under Figures > Additional Figures. Look at this image:
http://www.digitalartform.com/archives/images/poser6Skeleton.jpg
What do you charge for usage of your images? Please contact me. Thank you, A. Thomas