From the case:
Intrinsic muscles of the hand (illustrations)
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Diagrams of the intrinsic muscles of the right hand. All image files licensed under Creative Commons BY 3.0 OpenStax College, cnx.org
Case Discussion
License: All image files licensed under Creative Commons BY 3.0
Author: OpenStax College, cnx.org
Images adapted for square crop by Dr Andrew Dixon & Dr Chamath Ariyasinghe.