16. what features of synovial joints are not shown in this picture?
17. what are the two articulating bones in the femoropatellar joint?
18. in this joint, the only movement allowed is the gliding motion of the patella. what type of synovial joint
19. what are the two articulating bones in the tibiofemoral joint?
20. this joint is a bit more complex. structurally it is considered a condyloid joint, however it is actually as a modified hinge joint. if it acts as a hinge, what movements does it allow?
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Accepted Answer

### Question 17
# Brief Explanations:
The femoropatellar joint is part of the knee joint. The two articulating bones here are the femur (thigh bone) and the patella (kneecap).
# Answer:
The two articulating bones in the femoropatellar joint are the femur and the patella.

### Question 19
# Brief Explanations:
The tibiofemoral joint is also part of the knee joint. The two articulating bones are the tibia (shin bone) and the femur (thigh bone).
# Answer:
The two articulating bones in the tibiofemoral joint are the tibia and the femur.

### Question 20 (assuming the joint is the knee, though context about the joint name is a bit unclear, but from the description of condyloid/modified hinge, likely the knee or another similar joint; hinge joints typically allow flexion and extension)
# Brief Explanations:
A hinge joint, when acting as such, allows movements of flexion (decreasing the angle between two bones) and extension (increasing the angle between two bones). For example, in the knee (if this is the joint in question), it allows flexion (bending the knee) and extension (straightening the knee).
# Answer:
If the joint acts as a hinge joint, it allows flexion and extension.

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