Regions of Abdomen Lines
An abdominopelvic cavity or abdominal region may be divided into nine regions to describe the location of organs, easily by drawing four imaginary lines by two vertical lines and two horizontal lines.
1. Two Vertical Lines
Left and Right Midclavicular lines
These are drawn downward from the centers of the collar bones (midpoint of the clavicle) just medial to the nipples.
2. Two Horizontal Lines
a. Subcostal line
This line is drawn at the lower edge of the rib cage.
b. Transtubercular line
This line is placed at the upper edge of the hipbones.
Regions of abdomen divided into –
1. Upper Abdomen
2. Middle Abdomen, and
3. Lower Abdomen
9 Regions of Abdomen
A. Upper Abdomen (Upper “3”)
The upper three regions of the abdomen are-
1. Right hypochondriac region
2. Epigastric region
3. Left hypochondriac region
B. Middle Abdomen (Middle “3”)
The middle three regions of the abdomen are-
4. Right lumber region
5. Umbilical region
6. Left Lumber region
C. Lower Abdomen (Lower “3”)
The lower three regions of the abdomen are:
