Plexus nervosus is a term used to describe the network of nerves that form a complex structure in the body. Its spelling is derived from the Latin language, with "plexus" meaning "braid" and "nervosus" meaning "nervous." In phonetic transcription, "plexus" is pronounced /ˈplɛksəs/ and "nervosus" is pronounced /nɜːvəʊsəs/. This word is commonly used in medical terminology to describe the intricate system of nerves that run throughout the body and control its functions.
The term "plexus nervosus" refers to a complex interconnected network of nerves that branches out from the spinal cord or the autonomic nervous system. Also known as nerve plexus or simply plexus, it is composed of a combination of sensory and motor nerve fibers that come together to create a mesh-like structure.
The plexus nervosus can be found in various regions throughout the body, with the most well-known examples being the brachial plexus in the shoulder area and the lumbosacral plexus in the lower back. Within these regions, the plexus nervosus serves as a major hub for transmitting nerve signals to and from different body parts, allowing for the conduction of sensory information, as well as the coordination of motor movements.
The sensory pathway in the plexus nervosus carries information from the body's peripheral sensory receptors to the central nervous system, enabling the brain to perceive and interpret various stimuli such as touch, temperature, and pain. On the other hand, the motor pathway carries signals from the central nervous system to the muscles, facilitating voluntary and involuntary movements.
Overall, the plexus nervosus plays a crucial role in the overall functioning of the nervous system, ensuring efficient communication between the brain, spinal cord, and the rest of the body. Damage or disruption to the plexus nervosus can result in impaired sensory perception, loss of motor control, and a range of associated neurological symptoms.
A p. formed by the interlacing of nerves by means of numerous anastomotic branches.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The term "plexus nervosus" is Latin in origin, and its etymology can be understood from its constituent parts.
1. "Plexus" comes from the Latin word "plexus", which means "a braiding" or "an interweaving". It is derived from the verb "plicare", meaning "to fold" or "to weave".
2. "Nervosus" is derived from the Latin word "nervus", meaning "nerve". It refers to a bundle of nerve fibers that carry impulses in the body.
Therefore, "plexus nervosus" refers to a structure where nerve fibers interweave or form a network, which accurately describes the anatomical organization of nerve plexuses found in the human body.