Question

9 multiple choice 1 point when the knee is extended, what role does the popliteus muscle play? it provides stability by locking the knee into flexion it provides stability by locking the knee into extension it unlocks the knee by medially rotating the tibia it unlocks the knee by laterally rotating the tibia clear my selection 10 multiple choice 1 point which movement will lengthen the fibers of the plantaris? inversion plantar flexion dorsiflexion knee extension clear my selection

Explanation:

For question 9, the popliteus muscle unlocks the knee from full - extension by medially rotating the tibia. For question 10, the plantaris muscle is lengthened during dorsiflexion as it crosses the ankle joint and is stretched when the foot moves in the opposite direction of its action.

Answer:

1. It unlocks the knee by medially rotating the tibia
2. dorsiflexion