What secondary motions do the extensor pollicis longus, pollicis brevis, and abductor pollicis longus cause at the wrist? What synergy do they require to function effectively as thumb extensors?

What will be an ideal response?

ANS:
These muscles cross the wrist joint posteriorly and radially. Although their extensor action is weak, they are moderately effective radial deviators. If strong thumb extension is required, a synergist will be recruited to prevent the unwanted radial deviation and maintain length-tension for thumb extension.

Health Professions

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Health Professions

Which of the following abbreviations means the medication is taken orally?

PV PO PR SC

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