The word "ependymal" (/ɛˌpɛndɪˈmaʊl/) refers to the thin membranous lining found within the ventricles of the brain and the central canal of the spinal cord. The spelling of the word can be broken down using International Phonetic Alphabet (IPA) symbols to help understand how it is pronounced. The first syllable "ep" is pronounced as "ɛ", followed by "ɛn" which is pronounced as "ɛn". The next syllable is "dy" which is pronounced as "dɪ". Finally, "mal" is pronounced as "maʊl". The word "ependymal" is often used in neuroanatomy and neuroscience.
Ependymal is an adjective that pertains to or is associated with the ependyma, which is a type of tissue found in the central nervous system (CNS). The ependyma is a layer of cells that lines the cavities within the brain and spinal cord, including the ventricles, central canal, and choroid plexus. Ependymal cells are specialized epithelial cells that make up this layer, and they play a crucial role in the functioning and protection of the CNS.
The ependymal cells have cilia on their surface, which help in the circulation of cerebrospinal fluid (CSF) throughout the ventricular system. They also have specialized membrane transporters that contribute to the production and maintenance of CSF. In addition, ependymal cells help in the regulation of the chemical composition of the CSF by selectively allowing or blocking the passage of substances between the CSF and brain tissue.
Furthermore, ependymal cells possess stem cell-like properties and can differentiate into several cell types, contributing to the generation of new neurons and glial cells in certain regions of the CNS. This regenerative capacity makes ependymal cells essential for tissue repair and recovery after CNS injuries.
Overall, the term "ependymal" refers to the characteristics, functions, and location of the ependyma and its constituent cells, which are vital components of the CNS that facilitate the flow of CSF, regulate its composition, and participate in tissue regeneration and repair.
Relating to the ependyma.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "ependymal" has its roots in the Greek language. It is derived from the Greek word "ependyma", which means "an enveloping garment" or "a covering". In medical terms, "ependymal" refers to the lining cells that cover the ventricles of the brain, as well as the central canal of the spinal cord.