(27) CK-12 Foundation.
http://commons.wikimedia.org/wiki/File:Heart_myocardium_diagram.jpg.
CC-BY 2.5.
(28) CK-12 Foundation.
http://en.wikipedia.org/wiki/File:Gelenke_Zeichnung01.jpg. (a)Public
Domain (b)GNU-FDL.
(29) Kelly Sue DeConnick.
http://commons.wikimedia.org/wiki/File:Sunburn_(131417495).jpg.
CC-BY-SA 2.0.
.jpg.){kind=link}
(30) http://commons.wikimedia.org/wiki/File:Biceps_(PSF).jpg. Public Domain.
.jpg.){kind=link}