Embryology - 29 Nov 2023 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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This historic 1955 paper by Ashley describes the development of a joint between the manubrium and the mesosternum.

Modern Pages: joint | bone

Historic Embryology - Musculoskeletal
1853 Bone \| 1885 Sphenoid \| 1902 - Pubo-femoral Region \| Spinal Column and Back \| Body Segmentation \| Cranium \| Body Wall, Ribs, and Sternum \| Limbs \| 1901 - Limbs \| 1902 - Arm Development \| 1906 Human Embryo Ossification \| 1906 Lower limb Nerves and Muscle \| 1907 - Muscular System \| Skeleton and Limbs \| 1908 Vertebra \| 1908 Cervical Vertebra \| 1909 Mandible \| 1910 - Skeleton and Connective Tissues \| Muscular System \| Coelom and Diaphragm \| 1913 Clavicle \| 1920 Clavicle \| 1921 - External body form \| Connective tissues and skeletal \| Muscular \| Diaphragm \| 1929 Rat Somite \| 1932 Pelvis \| 1940 Synovial Joints \| 1943 Human Embryonic, Fetal and Circumnatal Skeleton \| 1947 Joints \| 1949 Cartilage and Bone \| 1957 Chondrification Hands and Feet \| 1968 Knee

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Pages where the terms "Historic" (textbooks, papers, people, recommendations) appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms, interpretations and recommendations may not reflect our current scientific understanding. (More? Embryology History \| Historic Embryology Papers)

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. (2023, November 29) 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

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