Body Location or Region
pectinate line
pec·ti·nate line
Definitions related to pectinate line:
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An anatomical line of demarcation that separates the upper and lower part of the anal canal, both in structure and neurovascular supply, reflecting the different embryologic origin; superior to the line the epithelium is a mucous membrane like the rest of the gastrointestinal tract and inferiorly the epithelium is considered cutaneous, and is composed of stratified squamous keratinized with hair and sebaceous glands.NCI ThesaurusU.S. National Cancer Institute, 2021
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Fiat anatomical line, each instance of which demarcates the boundary between endoderm- and ectoderm-derived parts of some anal canal.Foundational Model of AnatomyUniversity of Washington, 2017
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