Correct spelling for musculus extensor secundi internodii pollicis [Infographic]

MUSCULUS EXTENSOR SECUNDI INTERNODII POLLICIS Meaning and Definition

The term "musculus extensor secundi internodii pollicis" refers to a specific muscle located within the human hand. In anatomical terms, "musculus" translates to "muscle," "extensor" indicates its function of extending or straightening a body part, "secundi" means "second," "internodii" refers to a segment of a bone, and "pollicis" pertains to the thumb. Hence, the full definition of "musculus extensor secundi internodii pollicis" can be understood as the muscle responsible for the extension or straightening of the second segment of the thumb.

This particular muscle is part of the extensor group of muscles in the hand, which work collectively to control the movement of the wrist, fingers, and thumb. The "musculus extensor secundi internodii pollicis" originates from a specific point within the forearm and forms a tendinous structure that traverses the wrist joint and eventually inserts into the thumb bone or phalanx. When this muscle contracts, it causes the second segment of the thumb to extend or straighten. This action allows for various functions involving precision and grip strength in activities such as writing, gripping objects, and manipulating tools.

The understanding of the "musculus extensor secundi internodii pollicis" and its role in hand movements is crucial for medical professionals, anatomists, and those studying human physiology and kinesiology.
M. extensor pollicis longus.

A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.