What Action Occurs with the Extensor Hood When the Extensor

question 21

Multiple Choice

What action occurs with the extensor hood when the extensor digitorum muscle contracts?

• A)Hood moves proximally over metacarpophalangeal (MCP) joint, extends proximal phalanx
• B)Hood moves distally over interphalangeal (IP) joint, extends distal phalanx
• C)Hood moves proximally over MCP joint, extends distal phalanx
• D)Hood isometrically contracts, extends proximal interphalangeal, IP, and distal phalanx

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