Shape and movements of the thorax Flashcards
1
Q
2 types of costovertebral joints
A
- Acticulatio capitis costae
- Articulatio costotransversalis
2
Q
Articulatio capitis costae
A
- Joint between the anterior facet of the head of the rib and the superior and inferior fovea (demifacets) of the adjacent vertebrae, apart from vertebrae 1, 10, 11 and 12 which only have 1 facet/demifacet
- Heads of 2nd to 10th ribs are in contact with IVDs via Intraartricular ligaments running from the crista capitis costae - divides joint into two cavities
- Radiate ligament of head of rib (joint capsule covers its margins)
3
Q
Articulatio costotransversalis
A
- Between facies artricularis TUBERCULI costae and fovea costalis processus transversi
- Ligamentum costotransversarium - reinforces junction
- Ligamentum costotransversarium laterale - connects lateral part end of proc. transversus with tuberculum costae
- Ligamentum costotransversarium superius - connects collum costae with transverse proc. of more cranially located vertebrae
4
Q
2 types of sternocostal junctions + anterior and posterior sternal membranes
A
- Sternocostal joint
- Sternocostal synchondrosis
- Lig. sternocostalia radiata is ray-shaped and runs from the costal cartilage to the sternum on both the anterior and posterior sides creating a continuous anterior and posterior sternal membranes
5
Q
Sternocostal Joint
A
- Between costal cartilage (joint head) and incisura costalis sterni (for 2nd to 5th rib)
- Lig. sternocostale intraartriculare is found inside of the 2nd sternocostal joint
6
Q
Sternocostal synchondrosis
A
- Hyaline cartilage between the first rib and the manubrium
- Also often occurs at the 6th and 7th ribs
7
Q
2 types of intercostal junctions
A
- Interchondral joints
- Intercostal membranes
8
Q
Interchondral joints
A
- The synovial joints between the contiguous surfaces of the fifth, sixth, seventh, eighth, ninth, and tenth costal cartilages, forming the costal arch.
9
Q
Intercostal membranes
A
- Connect adjacent ribs
- MIC Externa - between cartilaginous parts of adjoining ribs, run in a mediocaudal direction
- MIC Interna - connects adjacent ribs near the vertebral column, running in a mediocranial direction
10
Q
Rib cage
A
- Truncated cone shape which is lightly flattened antero-posteriorly
- Three walls a basis and an apex
- Inside is the cavum thoracis
11
Q
Frontal wall of rib cage
A
- flattened
- sternum in the middle to which costal casrtilages are attached
- laterally are frontal sections of sternal parts of the ribs
- between ribs there are intercostal slits - palpable (except 1st rib and 1st intercostal slit)
12
Q
Dorsal wall of rib cage
A
- slightly flattened
- formed by thoracic part of vertebral column in the middle
- Ribs laterally attach to the transverse proc. of the vertebrae
13
Q
Lateral walls of rib cage
A
- form rounded transitions between the frontal and dorsal walls
- Consists of the strong curved parts of ribs
14
Q
Apex of rib cage (apertura thoracis superior)
A
- bordered by cranial margin of manubrium sterni in the front
- laterally by 1st rib
- dorsally by 1st thoracic vertebra
- Inclined slightly caudally
15
Q
Basis of rib cage (apertura throacis inferior)
A
- Bordered dorsally by 12th thoracic vertebra and by 12th ribs - inclines upwards and frontally
- Frontally bordered from the frontal margin of the 11th rib along the gristles of 10th to 8th rib (arcus costalis) to the lower end of the sternum
