Linked from
The 63 pages that link to Collagen, each with the reason it gives.
ProteinBroader topic: Collagen’s tensile strength helps support skin, tendons, cartilage, and bone.
Connective tissueBroader topic: Collagen fibers provide tensile strength to many connective tissues.
AponeurosisBroader topic: Collagen fibers give aponeuroses their tensile strength.
Chuck steakBroader topic: Heat and time can convert its connective-tissue fibers into gelatin.