Anatomy study note · Pelvis

Vagina

A muscular tube about 8 cm long running up and back from the vulva to the uterus. It is the genital canal, the outlet for menstrual flow and part of the birth canal.

Key points

• ~8 cm; 4 fornices round the cervix.
• Behind: pouch of Douglas / rectum / perineal body (upper/middle/lower thirds).
• Lower third lymph → superficial inguinal nodes.
• Supports: levator ani, cervical ligaments, urogenital diaphragm, perineal body.
• Vaginal plate: sinovaginal bulbs (endoderm) + uterovaginal canal.
• No glands; glycogen-rich stratified squamous epithelium → lactic acid.

The full note in the atlas also covers

Relations · Features · Blood supply · Nerve supply · Lymph drainage · Histology · Development · Clinical notes

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Written from

• Snell’s Clinical Anatomy by Regions, 10th ed., ch. 9, PDF pp. 1136–1141
• Inderbir Singh’s Human Embryology, ch. 16, PDF p. 293
• BRS Cell Biology & Histology, 7th ed., ch. 19, PDF p. 356

More from the pelvis

• Coccygeus
• Coccyx
• Hip bone
• Internal iliac artery
• Internal iliac vein
• Levator ani
• Ligaments of the uterus
• Obturator internus
• Obturator membrane
• Obturator nerve
• Ovary
• Pelvic lymph nodes

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