Answer: The correct answer for the blank is- Jointed appendages.
Appendage can be described as a part of the body that usually depicts an outgrowth in the body of an organism. Example- Legs, arms, fingers
Human beings have jointed appendages. These appendages possess bones that are linked to each other with the help of skeletal muscles, which are attached to cord like tendons that in turn are linked with bones of the appendages.
Therefore, jointed appendages is the right answer.