This animation not only shows how the ear detects sound waves and converts those waves into nerve signals, but it also shows how cochlear implants work and allow patients with nerve deafness to hear.

Interview with the lead surgeon who performed the first full face transplant surgery in the United States. The video the process that was involved with the face transplant procedure, the benefit to the patient and the possible ethical concerns to this ground-breaking procedure.

A physician describes what causes acne to develop and how it can lead to facial scars. She also describes several acne scarring treatments including collagen injections, dermal fat injections, dermabrasion, and laser skin treatments. The doctor also describes the role of skin transplant surgery and skin grafts in acne scar repair.

The human ear requires a number of highly specialized anatomical structures in order to transform sound wave energy into actually sounds recognized by the brain. This animation shows the various structures of the outer, middle and inner ear and how they work together to detect sound.