Which of the Following Simultaneous Joint Actions Illustrate Countercurrent Biarticular

question 11

Multiple Choice

Which of the following simultaneous joint actions illustrate countercurrent biarticular muscle action?
1) flexion at knee--extension at hips
2) extension at knee--flexion at hips
3) flexion of fingers--flexion at wrist
4) extension of fingers--flexion at wrist

• A) flexion at knee--extension at hips, extension at knee--flexion at hips
• B) extension at knee--flexion at hips, flexion of fingers--flexion at wrist
• C) flexion at knee--extension at hips, extension at knee--flexion at hips, flexion of fingers--flexion at wrist
• D) extension at knee--flexion at hips, flexion of fingers--flexion at wrist, extension of fingers--flexion at wrist

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