The uterine isthmus is the inferior-posterior part of uterus, on its cervical end — here, the uterine muscle (myometrium) is narrower and thinner. It connects the body and cervix.[1]

Uterine isthmus
Uterine isthmus labeled at 12
Details
Identifiers
Latinisthmus uteri
Anatomical terminology

The uterine isthmus can become more compressibile in pregnancy, which is a finding known as Hegar's sign.

References

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  1. ^ N. Jayne Klossner and Nancy T. Hatfield (2006). Introductory Maternity & Pediatric Nursing. Lippincott Williams & Wilkins. pp. 56. ISBN 9780781736909.