Muscle Power

Here are some links to help you to understand the muscle and its contraction.

http://highered.mcgraw-hill.com/sites/0072507470/student_view0/chapter9/animation__action_potentials_and_muscle_contraction.html

http://highered.mcgraw-hill.com/sites/0072507470/student_view0/chapter9/animation__myofilament_contraction.html

http://highered.mcgraw-hill.com/sites/0072507470/student_view0/chapter9/animation__sarcomere_contraction.html

http://www.blackwellpublishing.com/matthews/myosin.html

http://www.youtube.com/watch?v=gJ309LfHQ3M&feature=related

Genetic screening

You will be able to find some helpful information on some problems that can be detected early through pre-natal genetic screening:

http://www.nlm.nih.gov/medlineplus/ency/article/001660.htm (trisomy 13)

http://www.nlm.nih.gov/medlineplus/ency/article/001661.htm (trisomy 18)

http://www.nlm.nih.gov/medlineplus/ency/article/001580.htm (anencephaly)

http://kidshealth.org/parent/system/ill/spina_bifida.html (spina bifida)