Lecture Notes: Abdominopelvic Regions

Introduction

Objective: Understand abdominopelvic regions, how they are formed, their names, and major organs in each region.
Context: More detailed than quadrants, helps identify affected organs in pain diagnosis.

Structure: 9 regions, resembling a tic-tac-toe grid.
Borders:
- Superior: Diaphragm
- Inferior: Pelvic cavity
Lines:
- Vertical Lines: Called midclavicular, run through the middle of the clavicles.
- Horizontal Lines:
  - Superior Line: Subcostal, through the 10th rib cartilage.
  - Inferior Line: Intertubercular, connects iliac tubercles.

Medial Regions:
- Epigastric (top)
- Umbilical (middle)
- Hypogastric/Pubic (bottom)
Lateral Regions:
- Right and Left names differ based on side:
  - Hypochondriac (top)
  - Lumbar/Flank (middle)
  - Iliac/Inguinal/Groin (bottom)

Medial Regions:
- Epigastric: Stomach, end of esophagus
- Umbilical: Duodenum, transverse colon
- Hypogastric: Uterus, urinary bladder
Right Regions:
- Right Hypochondriac: Liver, gallbladder
- Right Lumbar: Right kidney, ascending colon
- Right Inguinal: Appendix, right ovary, uterine tube
Left Regions:
- Left Hypochondriac: Spleen, part of stomach
- Left Lumbar: Left kidney, descending colon
- Left Inguinal: Sigmoid colon, left ovary, uterine tube

Liver: Primarily in right hypochondriac but can extend to epigastric and left hypochondriac.
Small Intestine: Found across multiple regions including right/left lumbar, umbilical, and iliac regions.

Purpose of Regions: Help in diagnosing organ-related issues based on pain location, similar to the use of quadrants but more detailed.

These notes capture the key points from the lecture on abdominopelvic regions, their formation, names, and associated organs.