Addison’s lines divide the abdomen into nine regions. Those regions are the right and left _____ right and left ___, right and left ______ , and the central regions _____ , ____, and ____ .
The Correct Answer and Explanation is :
The nine regions of the abdomen, as divided by Addison’s lines, are:
- Right and left hypochondriac
- Right and left lumbar
- Right and left iliac
- Epigastric
- Umbilical
- Hypogastric (also called suprapubic)
Explanation:
Addison’s lines are imaginary lines used to divide the human abdomen into nine distinct regions to help with anatomical studies and clinical assessments. These regions are divided by two horizontal and two vertical lines.
- Two horizontal lines: One is placed just below the ribs (subcostal line), and the other is at the level of the iliac crests (intertubercular line).
- Two vertical lines: These lines are drawn from the midpoints of each clavicle, passing through the umbilicus, and they divide the body into equal parts from left to right.
The abdomen is divided as follows:
- Right and Left Hypochondriac Regions: These are located in the upper portion of the abdomen, just below the ribs. The hypochondriac regions are situated on either side of the epigastric region. They contain organs such as the liver, spleen, and part of the stomach.
- Right and Left Lumbar Regions: These are located on either side of the umbilical region, around the middle portion of the abdomen. These regions contain parts of the intestines and muscles.
- Right and Left Iliac Regions: These are located in the lower part of the abdomen, near the inguinal area. These regions typically contain parts of the large intestines, including the cecum and appendix on the right side, and the sigmoid colon on the left side.
- Epigastric Region: This region is located at the top of the abdomen, between the right and left hypochondriac regions. It contains the stomach, pancreas, and part of the liver.
- Umbilical Region: The middle region of the abdomen, around the navel, contains parts of the small intestine and large intestine.
- Hypogastric Region: Also known as the suprapubic region, it is located at the bottom of the abdomen and contains parts of the bladder, reproductive organs, and the sigmoid colon.
This division helps healthcare providers identify the location of various organs and diagnose conditions more effectively.