6. A(n) _____ is a group of similar cells and their surrounding materials performing specific functions.
- Tissue
- Organ
- Organism
- System
7. What type of joint is the knee joint?
- Ball and socket
- Hinge
- Plane
- Saddle
8. A ____ joint is one where the articulating bone surfaces are flat or slightly curved and permit gliding movements
- Saddle
- Ball and socket
- Plane
- Hinge
