Bony Thorax
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| what forms the bony thorax | -sternum
-12 pairs of ribs
-12 thoracic vertebrae
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| is the posterior of the bony thorax longer or shorter than the front | longer
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| how long is the sternum | 6" long
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| what is the purpose of the sternum | -attachment for costal cartilages of first seven pairs of ribs at lateral borders
-forms SC joints
-supports clavicles at manubrial angles
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| what are the three parts of the sternum | -manubrium(most superior)
-body(gladiolus)
-xiphoid process(most inferior)(ensiform)[top at T9 and tip at T10]
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| -quadrilateral in shape -widest portion of sternum -jugular notch at superior border *palpable landmark *lies at T2-T3 interspace -has a clavicular notch where sternoclavicular joints are | manubrium
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| which ribs are considered true ribs | 1st seven
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| -longest portion of sternum(about 4") -joined to another portion of sternum to create sternal angle -sternal angle is palpable and lies at T4-T5 -provides attachment for costal cartilage of first seven ribs at lateral border | Body of sternum
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| -most distal portion of sternum -often deviates from midline -useful landmark -tip lies over T10 and body lies over T9 | xiphoid process
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| funnel chest/caved chest/cereal chest | pectus excavum
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| pigeon chest/bulges out/extra bone | pectus carinatum
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| how many pairs of ribs to we have | -12(may increase with presence of a cervical or lumbar rib)*number corresponds to thoracic vertebrae to which it attaches
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| what classification of bone are the ribs | flat
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| anterior ends of ribs lie higher or lower than posterior ends | lower
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| what plane do the ribs sit in | oblique
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| intercostal space is made up of what | intercostal muscle(important during respiration)
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| ribs vary in _____ and _____ | -length
-width
(increase in length from 1-7, then decrease from 8-12)
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| which ribs are false ribs | 8-12
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| which ribs are floating | 11 and 12
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| tubercle of rib articulates with _____ | transverse process
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| head of rib articulates with ______ | vertebral body
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| what are the 2 extremities of ribs | vertebral and sternal
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| typical rib consist of ? | -head
-neck
-tubercle
-body
-costal angle(lots of nerves sit here)
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| costovertebral joint | head of rib and facet of vertebrae
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| costotransverse joint | tubercle of rib and transverse process
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| costochondral | between anterior extremities and costal cartilage
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| sternoclavicular joint classification | synovial/gliding.freely moveable
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| costovertebral: 1st-12th classification | synovial/gliding/freely moveable
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| costotransverse: 1st-10th classification | synovial/gliding/freely moveable
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| costochodral: 1st-10th classification | cartilaginous/synchondroses/immovable
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| sternocostal: 1st rib classification | cartilaginous/
synchondroses/
immovable
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| sternocostal: 2nd-7th classification | synovial/gliding/freely moveable
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| interchodral: 6th-9th classification | synovial/gliding/freely moveable
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| interchondral: 9th-10th classification | fibrous/syndesmoses/slightly moveable
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| manubriosternal classification | cartilaginous/
symphysis/
slightly moveable
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| xiphisternal classification | cartilaginous/
synchondroses/
immoveable
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| what is it called when the body of the sternum separates from the manubrium | flail chest
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Created by:
bigad1982
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