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Questions and Answers
Which of the following correctly describes the composition of the pleuropericardial membrane?
What does the pleuropericardial membrane develop into?
What is the primary function of the pleuropericardial membrane?
In the context of embryonic development, how is the pleuropericardial membrane positioned relative to the other structures?
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Which feature is NOT indicated in the diagram of the embryo?
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Which adult mesentery is derived from the ventral mesentery?
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Which of the following ligaments is NOT associated with the lesser omentum?
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What is primarily derived from the dorsal mesentery?
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Which structure is considered part of the greater omentum?
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The adult mesenteries are primarily derived from which embryonic structures?
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Study Notes
Pleuropericardial Membrane
- The pleuropericardial membrane is a paired structure composed of sheets of somatic mesoderm.
- Its primary function is to separate the pericardial cavity, which encloses the heart, from the pleural cavities, which enclose the lungs.
- During embryonic development, these membranes develop into the fibrous pericardium that surrounds the heart.
- A diagram illustrates the relationships between the pericardial cavity, pleural cavities, and the embryo.
- The diagram highlights the septum transversum, a crucial structure in the development of the diaphragm.
- A red arrow signifies the flow of fluid, providing context for the fluid dynamics within the embryonic cavities.
- The provided illustration represents a sagittal section of an embryo.
Embryonic Mesenteries
- The primitive gut tube in the embryo is suspended by a ventral and dorsal mesentery.
- The ventral mesentery forms the lesser omentum and the falciform ligament.
- The ventral mesentery also forms the coronary and triangular ligaments
- The dorsal mesentery forms the greater omentum, the mesentery of the small intestine and the mesoappendix.
- The dorsal mesentery also forms the transverse mesocolon and sigmoid mesocolon.
- The lesser omentum is comprised of two ligaments: the hepatoduodenal and the hepatogastric ligament.
- The greater omentum is made up of the gastrorenal, gastrosplenic, gastrocolic and splenorenal ligaments.
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Description
Explore the role of the pleuropericardial membrane in embryonic development. This quiz highlights its structure, function, and relationship to the heart and lungs. A diagram is included to illustrate key anatomical features and fluid dynamics during development.
