Paper - Factors leading to the development of a joint between the manubrium and the mesosternum: Difference between revisions
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G. T. Ashley | G. T. Ashley | ||
The sternum, though present in some form in the vast majority of vertebrates and always more or less constant in its position, is, nevertheless, a bone which varies greatly both in its form and in its function. For example, it may be broad and flat and devoid of joints, as in the tortoise; or it may be long and narrow and composed of many segments, as in the {{cat}}. | |||
[[File:Ashley1955 fig01.jpg|600px]] | |||
'''Fig. 1.''' Photomicrographs (natural size) of stained sections of foetal sterna showing (A, B, C, D) the presence of a fibrous band (arrowed) across the sternum at the level of the second costal, cartilages, and (E, F) the absence of such a band. Foetal age is indicated in each case. | |||
[[File:Ashley1955 fig02.jpg|600px]] | |||
'''Fig. 2.''' Paramedian sagital section of a 28 mm human embryo to show the relation of the heart and pericardium to the overlying mesosternum. | |||
[[File:Ashley1955 fig03.jpg|600px]] | |||
'''Fig.3.''' Examples of hylobatean-type human sterna showing the manubrio-sternal joint (free A,B: synostosed C,D) at the narrowest part of the sternum, in each case opposite the third costal cartilages. | |||
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Latest revision as of 21:43, 13 November 2018
Embryology - 19 Apr 2024    Expand to Translate
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Ashley GT. Factors leading to the development of a joint between the manubrium and the mesosternum. (1955) Thorax (1955), 10, 153-156.
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Factors leading to the Development of a Joint between the Manubrium and the Mesosternum
By
G. T. Ashley
The sternum, though present in some form in the vast majority of vertebrates and always more or less constant in its position, is, nevertheless, a bone which varies greatly both in its form and in its function. For example, it may be broad and flat and devoid of joints, as in the tortoise; or it may be long and narrow and composed of many segments, as in the cat.
Fig. 1. Photomicrographs (natural size) of stained sections of foetal sterna showing (A, B, C, D) the presence of a fibrous band (arrowed) across the sternum at the level of the second costal, cartilages, and (E, F) the absence of such a band. Foetal age is indicated in each case.
Fig. 2. Paramedian sagital section of a 28 mm human embryo to show the relation of the heart and pericardium to the overlying mesosternum.
Fig.3. Examples of hylobatean-type human sterna showing the manubrio-sternal joint (free A,B: synostosed C,D) at the narrowest part of the sternum, in each case opposite the third costal cartilages.
Cite this page: Hill, M.A. (2024, April 19) Embryology Paper - Factors leading to the development of a joint between the manubrium and the mesosternum. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Paper_-_Factors_leading_to_the_development_of_a_joint_between_the_manubrium_and_the_mesosternum
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
