The spelling of the word "nervus popliteus internus" can be a bit tricky due to the use of Latin terms. In phonetic transcription (IPA), it is pronounced as "nɜːrvəs pɒkliːtiːəs ɪntɜːrnəs." The "nervus" refers to a nerve, while "popliteus" means "behind the knee." "Internus" translates to "inside" or "internal." Therefore, the "nervus popliteus internus" is the internal nerve located behind the knee. While the spelling may seem challenging to non-Latin speakers, it is crucial to accurately describe medical conditions and treatments.
The nervus popliteus internus, also known as the internal popliteal nerve, is a term used to describe a specific nerve located in the human body. It is a branch of the sciatic nerve, a major nerve that runs down the back of the leg. The internal popliteal nerve specifically arises from the tibial portion of the sciatic nerve within the popliteal fossa, which is a shallow depression located on the back of the knee.
The nervus popliteus internus is responsible for providing innervation to certain muscles in the leg. It primarily supplies motor fibers to the popliteus muscle, a small muscle located at the back of the knee joint. This muscle is responsible for the rotation of the thigh and knee joint, aiding in unlocking the knee, especially during movements such as walking and running.
Additionally, the nervus popliteus internus also carries sensory fibers, providing innervation to the skin on the back of the knee and lower leg. This allows for the transmission of sensations such as touch, pressure, and temperature from these areas to the central nervous system.
Overall, the nervus popliteus internus plays a crucial role in motor control and sensory perception within the knee and lower leg. It is essential for the proper functioning and coordination of movements involving the knee joint, ensuring stability and flexibility during physical activities.
Internal popliteal nerve, n. tibialis.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.