Flex

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Flex (Medicine)

Flex (/flɛks/), derived from the Latin word flexus, meaning "bend", is a term used in medicine to describe the action of bending or the state of being bent. The opposite of flex is extend or extension.

Etymology

The term "flex" originates from the Latin word flexus, which means "bend". It was first used in the English language in the early 15th century.

Related Terms

  • Flexion: The action of bending or the condition of being bent, especially the bending of a limb or joint.
  • Extension: The action of stretching or straightening out a flexed limb or joint.
  • Flexor: A muscle whose contraction bends a limb or other part of the body.
  • Extensor: A muscle whose contraction extends or straightens a limb or other part of the body.

Usage in Medicine

In medicine, the term "flex" is often used to describe the action of a flexor muscle. When a flexor muscle contracts, it causes a joint to bend. For example, the biceps brachii muscle in the upper arm is a flexor. When it contracts, it causes the elbow joint to flex, or bend.

Flex is also used to describe certain movements in physical therapy and exercise. For example, a person might be instructed to "flex" their knee or elbow as part of a rehabilitation exercise.

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