No matter how challenging, Christopher Ramirez loves feeding his baby sister.
The 11-year-old was born with a muscle disorder and can't move his body from the neck down.
"He has strength of character, strength of heart, strength of spirit," said Dr. Jill Warren, a pediatrician with The Children's Hospital in Oklahoma City. "Yes, his muscles don't work, but in the things that matter most, he is stronger than most."
She reached out to mechanical engineering students at the University of Oklahoma to build adaptive tools for Christopher.
Those tools includes a voice-command laptop and a device that tracks his eye movement to navigate the cursor on the computer.
Watch the video above to learn more about Christopher's story.