TissueDB/Tissues/Umbilicus

Surface anatomy of the front of the trunk, showing the umbilicus at the midline of the abdomen.
License: Public domain by Henry Vandyke Carter

Umbilicus (navel, or belly button) is the fibrous tissue at the center of the abdomen, marking the site where the umbilical cord — also called the navel cord — attached during fetal development. It is the umbilical scar that cord leaves behind.

Materials

Material	Visual	Tactile	Simulator	Notes
Small Balloon			Trocar Placement Trainer	Cut to neck only; orient neck away from centre of skin layer.^[1]

Abdominal Wall — full layer structure containing umbilicus
Skin — outer layer
Fascia — provides the fascial resistance layer
Peritoneum and Serosa — inner layer

References

↑ ALL-SAFE Consortium. Trocar Placement Simulation — build instructions. Step 5: "Notice that the balloon has been cut, and includes just the neck of the balloon, which is oriented away from the center of the square." ALL-SAFE/Trocar Placement/Simulation

Page data
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Authors	Arturopelayo
License	CC-BY-SA-4.0
Language	English (en)
Related	0 subpages, 4 pages link here
Redirects	TissueDB/Tissues/Navel, TissueDB/Tissues/Belly button, TissueDB/Tissues/Navel Cord, TissueDB/Structures/Navel, TissueDB/Structures/Umbilical Scar
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Created	January 18, 2026 by Arturo Pelayo
Last edit	August 16, 2026 by Arturo Pelayo
Cite as	Arturopelayo (2026). "TissueDB/Tissues/Umbilicus". Appropedia. Retrieved August 23, 2026.
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[allsafe-trocar-1] ALL-SAFE Consortium. Trocar Placement Simulation — build instructions. Step 5: "Notice that the balloon has been cut, and includes just the neck of the balloon, which is oriented away from the center of the square." ALL-SAFE/Trocar Placement/Simulation

[1]