Rib

Kirsty was once kicked in the ribs by someone whilst in her sleeping bag. She went to A&E. (AUDIO: Hostile Environment)

Kaleds including Davros had more widely spaced ribcages than humans. (TV: The Stolen Earth) In his youth, Davros saw the ribs of some dead Kaleds melt and look as if they were tentacles due to mutation. (AUDIO: Innocence)