Which knee structure cushions the joint by forming a cartilaginous disk?

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Prepare for the Skeletal System AandP Test. Study with flashcards and multiple choice questions, each question offers hints and explanations. Enhance your knowledge for an impressive exam performance.

Multiple Choice

Which knee structure cushions the joint by forming a cartilaginous disk?

Explanation:
The knee uses fibrocartilaginous disks called the menisci to cushion the joint. These cartilaginous cushions sit between the femur and tibia, absorbing shock, spreading load, and improving contact congruence so the joint can move smoothly and withstand stresses during activities like walking or jumping. The other options aren’t cushions: ligaments like the ACL and MCL stabilize the knee, not cushion it, and the patella is a bone that helps with knee extension, not a cartilaginous disk between the bones. So the meniscus is the structure that forms a cushioning cartilaginous disk.

The knee uses fibrocartilaginous disks called the menisci to cushion the joint. These cartilaginous cushions sit between the femur and tibia, absorbing shock, spreading load, and improving contact congruence so the joint can move smoothly and withstand stresses during activities like walking or jumping. The other options aren’t cushions: ligaments like the ACL and MCL stabilize the knee, not cushion it, and the patella is a bone that helps with knee extension, not a cartilaginous disk between the bones. So the meniscus is the structure that forms a cushioning cartilaginous disk.

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