Skeletal System:
http://www.mayoclinic.com/health/acl-tear/MM00790
http://www.ivy-rose.co.uk/HumanBody/Skeletal/Skeletal_System.php
http://iahealth.net/wp-content/uploads/2008/12/joints.gif
http://www.innerbody.com/image/skel07.html
http://www.engin.umich.edu/class/bme456/ligten/ligten.htm
http://www.medicinenet.com/torn_acl/article/htm
Muscular System:
http://en.wikipedia.org/wiki/Muscular_dystrophy
http://kidshealth.org/parent/general/body_basics/bones_muscles_joints.html
http://www.neurosoma.com/ligaments.html
http://longtail.hubpages.com/hub/how-muscles-function
Nervous System:
http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookNERV.html
http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookNERV.html#Senses
http://faculty.washington.edu/chudler/introb.html#dr
Endocrine System:
http://kidshealth.org/parent/general/body_basics/endocrine.html
http://kidshealth.org/teen/your_body/body_basics/brain_nervous_system.html
http://www.medicinenet.com/type_1_diabetes_pictures_slideshow/article.htm
http://www.medicinenet.com/type_2_diabetes_pictures_slideshow/article.htm