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Flexor Pollicis Longus is a muscle located in the forearm that is responsible for flexing the thumb. This muscle enables the thumb to perform its pinching and gripping actions, essential for fine motor skills. It plays a critical role in various hand movements, contributing to the versatility and functionality of the human hand.

The name "Flexor Pollicis Longus" is derived from Latin, where "flexor" means to bend, "pollicis" refers to the thumb, and "longus" denotes the muscle's long shape.

Without the Flexor Pollicis Longus, the capability to precisely grip objects would be severely compromised, affecting tasks such as writing, buttoning clothes, and using tools. This would drastically limit the dexterity and usability of the hand, impacting daily activities that require fine thumb control.

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