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Related Concept Videos

Peritoneum01:21

Peritoneum

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The peritoneum is a vital membrane that lines the abdominal cavity and covers most of the organs within it. It plays a crucial role in protecting the organs, providing a smooth surface for their movement, and facilitating various physiological processes. Understanding the anatomy and function of the peritoneum is essential for comprehending the complexities of the abdominal region.
Anatomy of the Peritoneum
The peritoneum is divided into two layers: the parietal peritoneum and the visceral...
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Peritoneal Dialysis I: Introduction and Procedure01:30

Peritoneal Dialysis I: Introduction and Procedure

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Peritoneal dialysis (PD) is a procedure that facilitates the exchange of solutes, waste products, electrolytes, and excess fluid between the blood in the peritoneal capillaries and a dialysis solution introduced into the peritoneal cavity.Principles of Peritoneal Dialysis (PD)Diffusion: Waste products such as urea and electrolytes move from high concentrations in the blood to low concentrations in the dialysate across the peritoneal membrane. This mechanism is driven by the concentration...
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Abdominal Regions and Quadrants01:19

Abdominal Regions and Quadrants

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To promote clear communication, for instance, about the location of a patient's abdominal pain or a suspicious mass, anatomists and clinicians typically use imaginary lines to categorize the abdominopelvic cavity into either four quadrants or nine regions to identify organs in the cavity.
The simpler quadrants approach, which is more commonly used in medicine, subdivides the cavity with one horizontal and one vertical line that intersects at the patient's umbilicus (navel). The four...
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Muscles of the Pelvic Floor and Perineum01:26

Muscles of the Pelvic Floor and Perineum

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The muscles of the pelvic floor and perineum are crucial for supporting the pelvic organs, controlling continence, and aiding in sexual function, childbirth, and core stability. They are typically divided into the superficial perineal layer and the deep pelvic floor layer.
Perineal Layer
The perineum is a diamond-shaped area below the pelvic diaphragm, divided into an anterior urogenital triangle that contains the external genitals and a posterior anal triangle housing the anus. The urogenital...
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Pleura of the Lungs01:13

Pleura of the Lungs

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The lungs are nestled in a cavity, shielded by the pleura. The pleura, a form of serous membrane, wraps around each lung. This membrane arrangement consists of two layers: the visceral and parietal pleurae. The visceral pleura lines the surface of the lungIn contrast, the parietal pleura is the outer layer and contacts to the thoracic wall, the mediastinum, and the diaphragm. The hilum is the point of connection between the visceral and parietal layers. The space between the parietal and...
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Pressure Relationships in Thoracic Cavity01:24

Pressure Relationships in Thoracic Cavity

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Breathing, otherwise known as pulmonary ventilation, is the process of air movement into and out of the lungs. The main mechanisms propelling pulmonary ventilation are atmospheric pressure (Patm), intra-pulmonary (Ppul ) or intra-alveolar pressure (Palv) within the alveoli, and intrapleural pressure (Pip) within the pleural cavity.
Breathing Mechanisms
Both intra-alveolar and intrapleural pressures rely on specific lung properties. The ability to breathe—allowing air to enter the lungs...
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Related Experiment Video

Updated: Apr 12, 2026

Isolation of Mouse Peritoneal Cavity Cells
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Isolation of Mouse Peritoneal Cavity Cells

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The subperitoneal space and peritoneal cavity: basic concepts.

Harpreet K Pannu1, Michael Oliphant2

  • 1Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA. pannuh@mskcc.org.

Abdominal Imaging
|May 27, 2015
PubMed
Summary
This summary is machine-generated.

The subperitoneal space and peritoneal cavity are distinct anatomical regions. Disease can spread within these spaces or cross the peritoneum between them, impacting the abdomen and pelvis.

Keywords:
AnatomyPeritoneal cavitySubperitoneal space

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Area of Science:

  • Anatomy
  • Surgical Pathology
  • Medical Imaging

Background:

  • The peritoneum lines the abdominal cavity and pelvic organs.
  • The subperitoneal space is located beneath the peritoneum.
  • These spaces are crucial for understanding disease dissemination.

Purpose of the Study:

  • To elucidate the anatomical relationship between the subperitoneal space and peritoneal cavity.
  • To describe the pathways of disease spread between these two spaces.
  • To enhance understanding of abdominal and pelvic disease progression.

Main Methods:

  • Anatomical review of peritoneal and subperitoneal spaces.
  • Analysis of disease spread patterns in surgical and radiological literature.
  • Pathophysiological modeling of peritoneal and subperitoneal disease transmission.

Main Results:

  • The subperitoneal space and peritoneal cavity are identified as mutually exclusive yet interconnected spaces.
  • Disease can spread contiguously within each space via interconnected pathways.
  • Disease can also disseminate across the peritoneal membrane between these spaces.

Conclusions:

  • Understanding the distinct yet connected nature of these spaces is vital for accurate diagnosis and treatment.
  • The peritoneum acts as a barrier but also a potential conduit for disease spread.
  • This anatomical knowledge aids in predicting and managing the extent of abdominal and pelvic pathologies.