name | Coccyx |
---|---|
latin | os coccygis |
graysubject | 24 |
graypage | 186 |
width | 200 |
meshname | Coccyx |
meshnumber | A02.835.232.834.229 |
dorlandsid | }} |
The term ''coccyx'' comes originally from the Greek κόκκυξ and means "cuckoo", referring to the curved shape of a cuckoo's beak when viewed from the side.
The anterior side of the coccyx serves for the attachment of a group of muscles important for many functions of the pelvic floor (i.e. defecation, continence, etc.): The levator ani muscle, which include coccygeus, iliococcygeus, and pubococcygeus. Through the anococcygeal raphé, the coccyx supports the position of the anus. Attached to the posterior side is gluteus maximus which extend the thigh during ambulation.
Many important ligaments attach to the coccyx: The anterior and posterior sacrococcygeal ligaments are the continuations of the anterior and posterior longitudinal ligaments that stretches along the entire spine. Additionally, the lateral sacrococcygeal ligaments complete the foramina for the last sacral nerve. And, lastly, some fibers of the sacrospinous and sacrotuberous ligaments (arising from the spine of the ischium and the ischial tuberosity respectively) also attach to the coccyx.
An extension of the pia mater, the filum terminale, extends from the apex of the conus, and inserts on the coccyx.
Most anatomy books wrongly state that the coccyx is normally fused in adults. In fact it has been shown that the coccyx may consist of up to five separate bony segments, the most common configuration being two or three segments.
Category:Bones of the torso Category:Vertebral column Category:Greek loanwords
ar:العصعص br:Askorn belost bg:Опашна кост ca:Còccix cs:Kostrč cy:Cwtyn y cynffon da:Haleben de:Steißbein es:Cóccix eo:Kokcigo fa:دنبالچه fr:Coccyx gl:Cóccix ko:꼬리뼈 io:Kocigo it:Coccige he:עצם העוקץ lv:Astes kauls lt:Uodegikaulis ms:Koksiks nl:Stuit no:Haleben mrj:Пачтамга pl:Kość guziczna pt:Cóccix ru:Копчик scn:Cruduzzu simple:Coccyx sk:Kostrč sl:Trtica fi:Häntäluu te:అనుత్రికము uk:Куприкова кістка zh-yue:尾龍骨 zh:尾骨This text is licensed under the Creative Commons CC-BY-SA License. This text was originally published on Wikipedia and was developed by the Wikipedia community.
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