뒤로Abdominopelvic Regions and Key Anatomical Terms
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Abdominopelvic Regions
Overview of the Nine Abdominopelvic Regions
The abdominopelvic cavity is divided into nine regions by clinicians to help localize and describe the locations of internal organs. This division is accomplished using two transverse (horizontal) planes and two parasagittal (vertical) planes, forming a grid similar to a tic-tac-toe board.
Umbilical Region (5): The central square of the grid, located around the navel (umbilicus). It is often used as a reference point for the other regions.
Hypochondriac Regions (1 - right, 3 - left): These are the superior lateral regions, located to the right and left of the epigastric region, beneath the cartilage of the lower ribs.
Epigastric Region (2): The superior central region, located above the umbilical region and between the hypochondriac regions. It is situated over the stomach.
Lumbar Regions (4 - right, 6 - left): The middle lateral regions, located to the right and left of the umbilical region.
Hypogastric (Pubic) Region (8): The inferior central region, located below the umbilical region.
Inguinal (Iliac) Regions (7 - right, 9 - left): The inferior lateral regions, located to the right and left of the hypogastric region, overlying the iliac bones.
Example: Pain in the right lower quadrant may be localized to the right inguinal (iliac) region, which can help clinicians diagnose conditions such as appendicitis.
Left | Center | Right | |
|---|---|---|---|
Upper | Left Hypochondriac (3) | Epigastric (2) | Right Hypochondriac (1) |
Middle | Left Lumbar (6) | Umbilical (5) | Right Lumbar (4) |
Lower | Left Inguinal/Iliac (9) | Hypogastric (8) | Right Inguinal/Iliac (7) |
Additional Anatomical and Physiological Terms
Key Definitions
Absorption: The process by which substances (typically very small molecules) enter the body, often through the lining of the digestive tract. Absorption is dependent on catabolic reactions, which break down complex molecules into simpler ones that can be absorbed.
Adaptability: The ability of an organism to make long-term changes in response to environmental conditions. This is a form of long-term responsiveness and is essential for survival and homeostasis.
Example: The absorption of glucose from the small intestine into the bloodstream is a critical step in digestion and metabolism.
Additional info: Catabolic reactions are metabolic pathways that break down molecules into smaller units and release energy, which can then be used for various physiological processes, including absorption.
