iSurgical

iSurgical provides a set of about 240 anatomical drawings of the human body for viewing and drawing upon, as well as a facility for taking photographs, which can be drawn upon as well.

iSurgical lets you draw freely on top of anatomical drawings, utilizing several colors and line widths. You can save your annotated images to the Photo Library and send them via email. The app currently allows a textual comment as part of the annotation. 

If you're a doctor or nurse, you might use this app to demonstrate to a patient what will be done in surgery.

If you're a student, use this app to assist learning basic anatomy and physiology.