Irregular bone

Irregular bone

Infobox Anatomy
Name = Irregular bone
Latin = os irregulare
GraySubject = 17
GrayPage = 80

|jjfifmedkidii Caption = |djuf
|fdfdf Caption2 = |df System = |df Precursor = |df MeshName = |df MeshNumber = |dfgswgfrsdfgsrtsdfgsdr DorlandsPre = o_07 |sdfgsdffgdsf DorlandsSuf = 12598430 |erdsgergsdfgd
The irregular bones are bones which, from their peculiar form, cannot be grouped as long bone, short bone, flat bone or sesamoid bone. Irregular bones serve some various purposes in the body, such as: protection of nervous tissue (such as the vertebrae protect the spinal cord), affording multiple anchor points for skeletal muscle attachment (as with the sacrum), and maintaining pharynx and trachea support, and tongue attachment (such as the hyoid bone). They consist of cancellous tissue enclosed within a thin layer of compact bone.

The irregular bones are: the vertebræ, sacrum, coccyx, temporal, sphenoid, ethmoid, zygomatic, maxilla, mandible, palatine, inferior nasal concha, and hyoid.

References

* [http://216.251.232.159/semdweb/internetsomd/ASP/1496564.asp Stedman's Online Medical Dictionary, 27th Edition]


Wikimedia Foundation. 2010.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • irregular bone — os irregulare …   Medical dictionary

  • Bone, temporal — A large irregular bone situated at the base and side of the skull. The temporal bone consists of three parts (squamous, tympanic and petrous) which are distinct at birth but then fuse. The petrous part of the temporal bone contains the… …   Medical dictionary

  • Bone — is the substance that forms the skeleton of the body. It is composed chiefly of calcium phosphate and calcium carbonate. It also serves as a storage area for calcium, playing a large role in calcium balance in the blood. The 206 bones in the body …   Medical dictionary

  • Bone meal — is a mixture of crushed and coarsely ground bones that is used as an organic fertilizer for plants and formerly in animal feed. As a slow release fertilizer, bone meal is primarily used as a source of phosphorus.Bone meal once was often used as a …   Wikipedia

  • Bone marrow — Simplified illustration of cells in bone marrow. Latin medulla ossium Code TA …   Wikipedia

  • Bone — This article is about the skeletal organ. For other uses, see Bone (disambiguation) and Bones (disambiguation). For the tissue, see Osseous tissue. Drawing of a human femur Bones are rigid organs that constitute part of the endoskeleton of… …   Wikipedia

  • Bone, parietal — The main bone on the side of the skull. Although the parietal bone is curved, it is considered a flat bone (as opposed to a tubular bone). The parietal bone is shaped like an irregular quadrangle. It articulates (joins) with the other parietal… …   Medical dictionary

  • bone — n. the hard extremely dense connective tissue that forms the skeleton of the body. It is composed of a matrix of collagen fibres impregnated with bone salts (chiefly calcium carbonate and calcium phosphate; see hydroxyapatite), in which are… …   The new mediacal dictionary

  • Bone, sphenoid — A bone at the base of the skull that is of a most irregular shape. The sphenoid bone consists of a central portion, (the body of the sphenoid) and six processes: two greater wings, two lesser wings and two pterygoid processes. The sphenoid bone… …   Medical dictionary

  • Temporal bone — A large irregular bone situated at the base and side of the skull. The temporal bone consists of three parts (squamous, tympanic and petrous) which are distinct at birth but then fuse. The petrous part of the temporal bone contains the… …   Medical dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”