noun
- internal skeletal structures that provide support and protection from within an organism’s body
Usage: biology; plural of endoskeleton
Examples
- Vertebrates have endoskeletons made of bone and cartilage.
- Fish, birds, and mammals all possess endoskeletons.
- The endoskeletons of sharks are composed entirely of cartilage.
- Endoskeletons grow with the animal throughout its life.
- Unlike insects with exoskeletons, humans have endoskeletons inside their bodies.
- The calcium in our endoskeletons makes our bones strong and rigid.