The Physiological spine model with soft discs and stand has extra soft disc material, which shows natural compression of discs under movement of the spine. While moving the spine one side of a disc gets compression from the vertebrae above and below material gets pressed out of the vertebrae - just like natural human disc material does. The Physiological spine model comes with an extra flexible metal joint rod and a flexible pelvis mounting, spinal cord, nerves, arteries, a sectioned sacrum, femur heads and stand.
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![Highly Flexible Human Spine Model, Mounted on a Flexible Core, with Femur Heads - 3B Smart Anatomy, 1000131 [A59/2], Human Spine Models](/thumblibrary/A59-2/A59-2_01_140_140_Highly-Flexible-Human-Spine-Model-Mounted-on-a-Flexible-Core-with-Femur-Heads-3B-Smart-Anatomy.jpg)
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![Physiological Human Skeleton Model Phil on Hanging Stand - 3B Smart Anatomy, 1020179 [A15/3], Skeleton Models - Life size](/thumblibrary/A15-3/A15-3_01_140_140_Physiological-Human-Skeleton-Model-Phil-on-Hanging-Stand-3B-Smart-Anatomy.jpg)
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![Functional Human Knee Joint Model with Ligaments & Marked Cartilage - 3B Smart Anatomy, 1000164 [A82/1], Joint Models](/thumblibrary/A82-1/A82-1_01_140_140_Functional-Human-Knee-Joint-Model-with-Ligaments-Marked-Cartilage-3B-Smart-Anatomy.jpg)
![Functional Human Elbow Joint Model with Ligaments - 3B Smart Anatomy, 1000165 [A83], Joint Models](/thumblibrary/A83/A83_01_140_140_Functional-Human-Elbow-Joint-Model-with-Ligaments-3B-Smart-Anatomy.jpg)
![Human Shoulder Joint Model with Rotator Cuff & 4 Removable Muscles, 5 part - 3B Smart Anatomy, 1000176 [A880], Joint Models](/thumblibrary/A880/A880_01_140_140_Human-Shoulder-Joint-Model-with-Rotator-Cuff-4-Removable-Muscles-5-part-3B-Smart-Anatomy.jpg)
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