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Fetal pig being dissected, showing the thoracic cavity, including the rib cage, the heart in the pericardium, the lungs, the diaphragm, part of the liver, and all the organs under the neck The size of the fetal pig depends on the time allowed for the mother to gestate :
The picture displays the mediastinum on sagittal plane, thoracic diaphragm at the bottom, the heart (cor), behind sternum and ribs (to the left on the picture (this is the anterior/front) and to the right (posterior/back)), you have the thoracic vertebrae. The thoracic cavity (or chest cavity) is the chamber of the body of vertebrates that is ...
Scheme showing development of branchial epithelial bodies from the thoracic cavity of the fetus. I, II, III, IV. Branchial pouches. The thymocytes and the epithelium of the thymus have different developmental origins. [4] The epithelium of the thymus develops first, appearing as two outgrowths, one on either side, of the third pharyngeal pouch. [4]
The sinus venosus is a large quadrangular cavity which precedes the atrium on the venous side of the chordate heart. [1] [verification needed]In mammals, the sinus venosus exists distinctly only in the embryonic heart where it is found between the two venae cavae; in the adult, the sinus venosus becomes incorporated into the wall of the right atrium to form a smooth part called the sinus ...
The mediastinum (from Medieval Latin: mediastinus, lit. 'midway'; [2] pl.: mediastina) is the central compartment of the thoracic cavity.Surrounded by loose connective tissue, it is a region that contains vital organs and structures within the thorax, namely the heart and its vessels, the esophagus, the trachea, the vagus, phrenic and cardiac nerves, the thoracic duct, the thymus and the lymph ...
Asphyxiating thoracic dysplasia (ATD), also known as Jeune syndrome, is a rare inherited bone growth disorder (autosomal recessive skeletal dysplasia) [1] that primarily affects the thoracic region. It was first described in 1955 by the French pediatrician Mathis Jeune. [ 2 ]
The allantois (/ ə ˈ l æ n t oʊ ɪ s / a-LAN-toe-iss; [1] pl.: allantoides or allantoises) is one the extraembryonic membranes arising from the yolk sac.It is a hollow sac-like structure filled with clear fluid that forms part of the developing conceptus in an amniote that helps the embryo exchange gases and handle liquid waste.
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