Rib, floating
One of the last two ribs. A rib is said to be "floating" if it does not attach to the sternum (the breast bone) or to another rib. There are usually 12 pairs of ribs in all. Each pair of ribs is attached to the building blocks of the spine (the vertebrae) in the back. The 12 pairs of ribs consist of: True ribs: The first seven ribs attach to the sternum (the breast bone) in the front and are known as true (or sternal) ribs. False ribs: The lower five ribs do not directly connect to the sternum and are known as false ribs. The upper three false ribs connect to the costal cartilages of the ribs just above them. The last two false ribs, however, usually have no ventral attachment (no anchor at all in front) and are called floating, fluctuating or vertebral ribs.

Medical dictionary. 2011.

Look at other dictionaries:

  • Rib — One of the 12 paired arches of bone which form the skeletal structure of the chest wall (the rib cage). The ribs attach to the building blocks of the spine (vertebrae) in the back. The 12 pairs of ribs consist of: True ribs: The first seven ribs… …   Medical dictionary

  • rib — I (New American Roget s College Thesaurus) v. t., informal, tease, kid, razz (inf.), roast (inf.). See wit. II (Roget s IV) n. 1. [One part of the bony frame of the thorax] Syn. true rib, false rib, floating rib, slat*, slab*, rod*, floater*; see …   English dictionary for students

  • Floating rib — The four floating ribs (indicated with red arrows) …   Wikipedia

  • Rib — Rib, n. [AS. rib, ribb; akin to D. rib, G. rippe, OHG. rippa, rippi, Dan. ribbe, Icel. rif, Russ. rebro.] 1. (Anat.) One of the curved bones attached to the vertebral column and supporting the lateral walls of the thorax. [1913 Webster] Note: In… …   The Collaborative International Dictionary of English

  • Rib grass — Rib Rib, n. [AS. rib, ribb; akin to D. rib, G. rippe, OHG. rippa, rippi, Dan. ribbe, Icel. rif, Russ. rebro.] 1. (Anat.) One of the curved bones attached to the vertebral column and supporting the lateral walls of the thorax. [1913 Webster] Note …   The Collaborative International Dictionary of English

  • rib — [rib] n. [ME ribbe < OE rib, akin to ON rif, Ger rippe < IE base * rebh , to arch over, roof over > Gr ereptein, to crown, OSlav rebro, rib] 1. any of the arched bones attached posteriorly to the vertebral column and enclosing the chest… …   English World dictionary

  • Floating rib — One of the last two ribs. A rib is said to be floating if it does not attach to the sternum (the breast bone) or to another rib. There are usually 12 pairs of ribs in all. Each pair of ribs is attached to the building blocks of the spine (the… …   Medical dictionary

  • Rib — This article is about the part of the skeleton. For other uses, see Rib (disambiguation). Single human rib detail The …   Wikipedia

  • floating rib — noun : a rib not connected with the sternum or cartilages of other ribs ventrally, in man being the 11th and 12th on each side * * * ˌfloating ˈrib 7 [floating rib] (also ˌfalse ˈrib) noun …   Useful english dictionary

  • rib — n. 1) to poke smb. in the ribs 2) a false; floating rib 3) (misc.) to break, fracture a rib * * * [rɪb] floating rib fracture a rib (misc.) to break a false to poke smb. in the ribs …   Combinatory dictionary

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