Term
| Most of the thoracic wall is covered by muscles that have migrated and are considered part of the _______ |
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Definition
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Term
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Definition
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Term
| Which are the false ribs? |
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Definition
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Term
| Which are the floating ribs? |
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Definition
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Term
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Definition
- flattened bars of hyaline cartilage
- superior seven costal cartilages are connected with the sternum
- 8-10 connect to inferior border
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Term
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Definition
| the border of the 7th-10th costal cartilages merge to form the costal margin |
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Term
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Definition
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Term
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Definition
| the apex of the infrasternal angle |
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Term
| the sternum includes ____, ____, and ____ |
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Definition
| body, manubrium, xiphoid process |
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Term
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Definition
| joint that connects manubrium and sternum (symphysis) |
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Term
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Definition
| manubrium and sternum are in slightly different planes |
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Term
| Superior Aperture of Thorax (thoracic inlet) |
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Definition
| structures in thorax communicate with the root of the neck through this inlet |
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Term
| Borders of the Superior Aperture of the Thorax (3) |
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Definition
- posteriorly - 1st thoracic vertebrae
- anterolaterally - 1st ribs and their costal cartilages
- anteriorly - manubrium
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Term
| Inferior Aperture of Thorax (thoracic outlet) |
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Definition
| closed by the diaphragm which has holes for structures passing from thorax to abdomen |
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Term
| Borders of the Inferior Aperture of the Thorax (3) |
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Definition
- posteriorly - 12th thoracic vertebrae
- anterolaterally - 12 pair of ribs
- anteriorly - xiphosternal joint
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Term
| Muscles of the thoracic Wall (5) |
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Definition
- serratus posterior
- intercostals
- subcostals
- transversus thoracis
- levatores costarum
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Term
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Definition
| 11 pairs that run obliquely inferioly and anterioly beginning just lateral to the tubercles and extending to the costal cartilages |
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Term
| External Intercostals Origin |
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Definition
| inferior border to the rib above |
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Term
| External Intercostals Insertion |
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Definition
| superior border to the rib below |
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Term
| External Intercostals Innervation |
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Definition
| intercostal nerves; t1-t11 |
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Term
| External Intercostals Function (2) |
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Definition
- brings adjacent ribs together
- increases the volume of the thoracic cavity
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Term
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Definition
| 11 pairs that run posterior to and at right angles to external intercostals |
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Term
| Internal Intercostals Origin (4) |
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Definition
- floor of costal grooves
- from the shaft and costal cartilage anteriorly from the sternum
- posteriorly to the angle of the ribs
- between the ribs posteriorly the internal intercostals are replaced by the internal intercostal membrane
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Term
| Internal Intercostals Insertion |
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Definition
| upper border of the rib below |
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Term
| Internal Intercostals Innervation |
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Definition
| intercostal nerves; t1-t11 |
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Term
| Internal Intercostals Function |
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Definition
| brings adjacent ribs together and expand the volume of the thoracic cavity |
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Term
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Definition
| deep portions of internal intercostal muscles; separated from them by the intercostal nerves and vessels; cover the internal surface of adjacent ribs throughout middle 1/2 length of rib |
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Term
| Transversus Thoracic Origin (2) |
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Definition
- lower 1/3 of the posterior surfaces of the body of the sternum
- the xiphoid process
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Term
| Transversus Thoracic Insertion |
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Definition
| lower borders of the costal cartilages of the 2nd, 3rd, 4th, 5th, and 6th ribs |
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Term
| Transversus Thoracic Innervation |
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Definition
| intercostal nerves; t1-t11 |
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Term
| Transversus Thoracic Function |
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Definition
| brings the ventral ribs downward to decrease size of the thoracic cavity |
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Term
| the large ventral ramus of the 12th thoracic nerve does not enter an intercostal space and is called ______ |
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Definition
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