plexus coccygeus
Học thuậtThân thiện
Definition
Noun: A small network of intersecting nerves located near the coccyx (tailbone), formed by the fifth sacral nerve and the coccygeal nerve(s). It is part of the peripheral nervous system and is involved in sensory and autonomic functions of the pelvic floor and perineal region.
Usage
The term is used in anatomical, medical, and biological contexts to describe a specific nerve structure. * The plexus coccygeus provides innervation to the skin over the coccyx. * During the dissection, the surgeon carefully identified the plexus coccygeus. * Pain in the tailbone area, known as coccydynia, can sometimes involve the plexus coccygeus.
Advanced Usage
- The plexus coccygeus is often considered a minor plexus compared to larger ones like the brachial or lumbar plexus.
- In some anatomical classifications, it is described as being continuous with or part of the inferior portion of the pelvic autonomic plexus.
Variants and Related Words
- Coccygeal plexus: A direct synonym for .
- Nerve plexus: The general category of structures to which the belongs.
- Sacral plexus: A larger, adjacent nerve plexus from which some contributing fibers may arise.
Synonyms
- Coccygeal plexus
Related Terms (Contextual)
- Coccyx: The small triangular bone at the base of the spinal column, near which this plexus is located.
- Sacral nerves: The spinal nerves exiting the sacrum, specifically S5 contributes to this plexus.
- Coccygeal nerve: The spinal nerve exiting the coccygeal vertebra, which contributes to this plexus.
- Perineum: The general body region innervated by branches from this and adjacent plexuses.
Noun
- a small plexus formed by the fifth sacral and coccygeal nerves