Please help!! Gillian bends her knee and then straightens her leg to kick a soccer ball. Which pair of motions did she just perform with her knee joint? A. adduction and abduction
B. flexion and extension
C. elevation and depression
D. internal rotation and external rotation

A. adduction and abduction

Explanation: In the limbs, flexion decreases the angle between the bones (bending of the joint), while extension increases the angle and straightens the joint. ... Knee flexion is the bending of the knee to bring the foot toward the posterior thigh, and extension is the straightening of the knee.

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