Filum terminale is a term commonly used in neuroanatomy. It refers to the thin, thread-like structure at the end of the spinal cord. The word "filum" is pronounced /ˈfaɪləm/, with the stress on the first syllable. "Terminale" is pronounced /tərˈmɪnəli/, with the stress on the second syllable. The spelling of this word may seem unusual, but it follows the standard conventions of Latin grammar and pronunciation. Understanding the spelling and pronunciation of this term can help medical professionals communicate effectively with one another.
Filum terminale refers to a slender, thread-like structure that is part of the human spinal cord. It is a thin extension of the spinal cord's pia mater, which is the delicate and innermost layer of the meninges, the protective covering that surrounds the brain and spinal cord. The filum terminale is primarily composed of fibrous connective tissue.
Specifically, the filum terminale extends from the conus medullaris, which is the tapered portion of the spinal cord, through the lumbar region of the vertebral column and ends at the coccyx, the small bone at the base of the spine. Its length can vary, but on average, it measures around 20 centimeters.
The main function of the filum terminale is to provide support and stabilization for the spinal cord within the vertebral column. It acts as an anchor, preventing excessive movement or displacement of the spinal cord during bodily movements. Additionally, the filum terminale also helps maintain the position and alignment of the spinal cord, ensuring the integrity of the spinal column.
Although the filum terminale is a non-neural structure, it plays a crucial role in ensuring the proper functioning of the spinal cord and protecting it from potential damage. Any abnormalities or pathological conditions affecting the filum terminale, such as tethered cord syndrome, can result in various neurological symptoms and impairments.
Terminal thread, nervus impar, a long slender filament extending from the extremity of the conus medullaris to the termination of the spinal canal.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "Filum Terminale" has Latin origins.
- "Filum" comes from the Latin word "filum", which means "thread" or "fibre". It refers to a slender structure or thread-like extension.
- "Terminale" originates from the Latin word "terminalis", which means "pertaining to an end" or "end part".
Therefore, "Filum Terminale" can be translated as "terminal thread" or "end structure". This term is commonly used in anatomy to describe a thin, filamentous structure within the spinal cord.