Body cavities
Summary
Description
This original animation describes an approximately 16-day-old presomite embryo and shows the formation of the intraembryonic celom, from which the body cavities develop. After the fusion of the intraembryonic celomic vesicles, the future primitive pleuropericardial cavity and the future peritoneal cavity are created. Arrows show the extension of the intraembryonic celom.... (more)
This original animation describes an approximately 16-day-old presomite embryo and shows the formation of the intraembryonic celom, from which the body cavities develop. After the fusion of the intraembryonic celomic vesicles, the future primitive pleuropericardial cavity and the future peritoneal cavity are created. Arrows show the extension of the intraembryonic celom. The next sequences show the early evolution period of the intraembryonic celom, viewed in 3D.
For this purpose, the trilaminar germ disc is cut transversally and the anterior part is sectioned horizontally to show the fusion of the intraembryonic celomic vesicles. The same diagram indicates the communication site between the extraembryonic and the intraembryonic celom. The celomic canals and the pericardial celom then form.
The following sequence show the longitudinal and the lateral folding of the embryo, which leads to the formation of the primitive pleuropericardial cavity in an approximately 21-day-ol-embryo. To allow for the development and interconnection of the body cavities, structures that are not directly implied in this process (e.g. the somites, yolk sac) are excluded from the diagrams. However, the diagram includes an outline of future peritoneal cavity.
All depicted structures face the spectator in order to show the formation of the pericardial cavity and the peritoneal cavity, which are connected by the pericardioperitoneal canals. The primitive pericardioperitoneal cavity is opened, so that the orifices of the pericardioperitoenal canals, lung bud, common cardinal veins and pleuropericardial folds become visible. A summary diagram shows the extension of all three body cavities.
The next sequence animates the division of the primitive pleuropericardial cavity with the simultaneous occurence of the septum transversum, pleuroperitoneal folds and bronchial buds. At the same time, the pleuroperitoneal folds move towards the midline. The following sequence shows the extension of the body cavities at the end of the 8th week.
In order to make the development of the body cavities more clear, the primitive pleuropericardial cavity of an approximately 25-day-old embryo is sectioned horizontally. The entire embryo rotates toward the spectator to show the evolution of the pleuropericardial folds, common cardinal veins, lung bud, sinuatrial junction, phrenic nerves, umbilical and vitelline veins, mesocardium and the primordia of the pleuroperitoneal folds, as viewed from above. The next sequence animates the gradual closure of the pericardial cavity through the septum transversum, the closure of the pericardioperitoneal canals through the pleuroperitoneal folds and the separation of the future pericardial cavity from the future pleural cavity throgh the pleuropericardial folds. The transversal section of the thoracic cavity in an approximately 8-week-old fetus illustrates the definitive situation of the pericardial and the peritoneal cavities.
To summarize all of the above events, a profile projection of body cavity development is animated from an approximately 19-day-old embryo to an embryo at the end of the 8th week.
Malformations of body cavities like the ectopia cordis, diaphragmatic and parasternal herniae, gastroschisis, omphalocele, exstrophy of the urinary bladder and the epispadia are animated in this animation.
(This animation is essential for students of medicine and veterinary medicine; it is also recommended for students of biology and stomatology as well as for departments of pediatrics and pediatric surgery).
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Details
2.5MB in size
397 pictures
7 chapters
37 legend panels
Version 1.0
Collections
Download a group of animations and save money! The Body cavities animation is also available in the following collections:
| All of Embryodynamics (56 animations) | $599.00 | |
| Amnion, Aortic arches, Blood and blood vessels, Body cavities, Central nervous system, Chromosomal anomalies, Cleavage, Cloaca, Cycles, Deciduae, Descent of sexual organs, Diaphragm, Digestive system, Ear, Embryology beginning, Embryonic circulation, Endochondral ossification, Endocrine glands, External genitalia, Eye, Face, Fertilization, Fetal circulation, Gametogenesis, Gastrulation, Gonads, Heart, Implantation, Integumentary system, Kidney, Liver, Long bone growth in diameter, Lymphatic system, Membranous ossification, Mesoderm, Myogenesis, Nerve fibres, Notochord, Olfactory, Pancreas, Pericardial reflexions, Pharyngeal arches, Placenta, Prostate, Respiratory system, Secondary ossification, Sex differentiation, Skeleton, Somites, Teeth, Tongue, Twins, Umbilical cord, Urinary bladder, Uterus during pregnancy, Veins | ||
Structure
View the structure of the Body cavities animation without thumbnails:
- DEVELOPMENT OF THE BODY CAVITIES
Animated scheme
- Early period of evolution of the
intraembryonic celom viewed in 3D
- Principle of the formation of the body cavities
- Anterior view of the division of the primitive pleuropericardial cavity
- Division of the primitive pleuropericardial cavity viewed
on the horizontal section
- SUMMARY
- Ectopia cordis
Diaphragmatic herniae
Parasternal hernia
Gastroschisis
Omphalocele
Exstrophy of the urinary bladder
Epispadias
SOME MALFORMATIONS
- THE END
RELATED TOPICS are covered in the following animations:
Central nervous system, Diaphragm, Digestive system, Heart, Liver, Respiratory system, Pericardial reflexions, Placenta, Skeleton, Urinary bladder.
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- Amnion
- Aortic arches
- Blood and blood vessels
- Body cavities
- Central nervous system
- Chromosomal anomalies
- Cleavage
- Cloaca
- Cycles
- Deciduae
- Descent of sexual organs
- Diaphragm
- Digestive system
- Ear
- Embryology beginning
- Embryonic circulation
- Endochondral ossification
- Endocrine glands
- External genitalia
- Eye
- Face
- Fertilization
- Fetal circulation
- Gametogenesis
- Gastrulation
- Gonads
- Heart
- Implantation
- Integumentary system
- Kidney
- Liver
- Long bone growth in diameter
- Lymphatic system
- Membranous ossification
- Mesoderm
- Myogenesis
- Nerve fibres
- Notochord
- Olfactory
- Pancreas
- Pericardial reflexions
- Pharyngeal arches
- Placenta
- Prostate
- Respiratory system
- Secondary ossification
- Sex differentiation
- Skeleton
- Somites
- Teeth
- Tongue
- Twins
- Umbilical cord
- Urinary bladder
- Uterus during pregnancy
- Veins