The Cervix Power Point Presentation

Neck of the uterus

Although the cervix is part of the uterus, structure and function differ from the main body of the uterus.

SITUATION

• It forms the lower 1/3 of the uterus and is the area below the isthmus  which includes the internal and external os.
• It enters the vagina at right angle.

SHAPE 

• The cervical canal is fusiform and the cervix as a whole is Barrel shaped.

SIZE

• It is 2.5cm long in adult. It becomes bigger in pregnancy and at times at birth it becomes almost equal size with the uterus.

GROSS STRUCTURE

• Supravaginal cervix – this is the portion that lies outside and above the vagina.
• Superiorly, it meets the border of the uterus at the isthmus.
• The infravaginal cervix – the portion which projects into the vagina.

the cervix

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