Anatomy of the Uterus
Cross-sectional view of internal female genitalia and pelvic contents.
From Seidel
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The uterus is a hollow, pear-shaped, muscular structure that lies in
the true pelvis between the bladder and the rectum. Its function is to
allow childbearing.
external os of the cervix
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The main body of the uterus is the corpus. The cephalic portion of the
corpus is called the fundus. The fallopian tubes enter the fundus laterally
at the cornua. Caudally, the corpus narrows to an isthmus that is continuous
with the uterine cervix.
The external os of the cervix. From
href=medArticle56.html#Mishell">Mishell
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The cervix is the lower, narrow portion of the uterus. The cervix is
predominantly fibrous tissue. The cervical canal opens into the vagina
at the external os of the cervix. In nulliparous women the os is small
and round. After vaginal delivery the os becomes wider and gaping. The
endometrium is the soft lining of the corpus. The endometrium consists
of tubular glands, blood vessels, and fine connective tissue (Ryan,
Mishell).
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