palmaris longus

English

(anatomy) Ellipsis of palmaris longus muscle. A muscle in the mammalian forearm which inserts into the palmar aponeurosis. In humans it is vestigial, and is absent in some people in one or both arms.
- 2019, Bill Bryson, The Body: A Guide for Occupants, Black Swan (2020), page 197:
  About 14 per cent of us lack a muscle called the palmaris longus, which helps to keep the palm tensed.
(anatomy) Ellipsis of palmaris longus tendon. A tendon in the mammalian forearm, between the flexor carpi radialis and the flexor carpi ulnaris tendons. In humans, it is vestigial and absent in about 1/8th of people in one or both arms; frequently repurposed for reconstructive surgery.

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