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Cards In This Set
| Front | Back |
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Describe the thoracic cage.
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- symmetrical
-irregularly shaped cylinder
-narrow superior aperture < wide inferior aperture
-aka thorax/thoracic cavity
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Describe the superior thoracic aperture.
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- subclavian AA and VV pass through
-trachae, esophagus, blood vessel all pass through
-open and narrow
-no membrane or muscle
-viscera from the neck
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Describe the inferior thoracic aperture.
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-wide and closed off by diaphragm
-filled with the diaphragm
-aorta, inferior vena cava, and esophagus pass through
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What many articular facets are on the head of the rib? What does it articulate with?
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-two
-articulates with the demifacets on the vertebral body of the typical thoracic vertebra
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How many surfaces are on the tubercle of the rib?
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-two; one is an articulating surface that articulates with the articular facet of the transverse process on the typical thoracic vertebra, the other is not
-the part that does not artic. with bone is for ligament attachment to support the rib cage
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What does the costal groove (the inferior-internal aspect of each rib) contain?
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VAN
veins arteries nerves
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What is the tip of the head in btwn the articular facets called?
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Crest
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What is the shaft of the rib?
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-from the angle to the anterior end of the costal cartilage
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Which end of the rib is the costal cartilage attached to?
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-anterior end
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Where does the xiphoid process occur?
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In inferior thoracic aperture
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What does a typical rib have?
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-head
-neck
-tubercle
-body
-anterior end
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How does the rib articulate with the sternum?
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-via costal cartilage
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Characteristics of a true rib. Which ones are true ribs?
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-attach to sternum directly via costal cartilage
-rib 1-7
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Which ones are false ribs? Why? What do they form?
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-rib 8-10
-attach to the costal cartilage of rib 7
-together with forms the costal margin (a border on anterior side of trunk)
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Which ones are floating ribs? Which side are they on? What are they prone to?
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Ribs 11-12
-no anterior connection to sternum
-no costal cartilage connection at all
-on anterior side
-prone to fracture, can damage liver, spleen
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