17. Divisions
2. The isthmus:
– an area 4-5 mm in
length that lies
between the
anatomical internal os
above, and the
histological internal os
below. It is lined by
low columnar
epithelium and few
glands.
– The isthmus expands
during pregnancy
forming the lower
uterine segment (10
cm) during the last
trimester.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37. THE PELVIC FLOOR
• All tissues lying between the pelvic cavity
and, the surface of the vulva and
perineum.
• Includes:
– Pelvic peritoneum
– Extraperitoneal fat and cellular tissue
– Levators ani and their fascial coats
– The triangular ligament (urogenital diaphragm)
– The perineal muscles and their aponeuroses
– Subcutaneous fascia and fat
– Skin.
38. Pelvic Diaphragm
= The levator ani muscles
+ the fascia which covers their upper and
lower surfaces
• In the midline, the pelvic floor is pierced by
the
– Urethra
– Vagina
– Rectum.
39. The Levators ani muscle
• The ischiococcygeus part:
– Origin from the ischial spine
– Inserted into the front of the coccyx.
• The iliococcygeus:
– Origin from the “white line” on the lateral Wall of the pelvis,
– inserted into tip of the coccyx and raphe
• The pubococcygeus
– Origin from the back of the pubic ramus
– Inserted into tip of the coccyx and raphe
40. The pubococcygeus
• Sends fibres to the urethra, vagina and
rectum to blend with their intrinsic
musclesdescribed as
• Pubourethralis
• Pubovaginalis
• Puborectalis
41.
42.
43.
44.
45.
46.
47. CONCLUSION
The female reproductive system is unique in it's own
structure. In order to create new life through pregnancy
and childbirth a reproductive system is essential. The
process is done through a male and female sex cells.
48. BIBILIOGRAPHY
• Shirish S Sheth,“Essential of Obstetrics”, 1stEdition, C
hapter13, Antenatal Care,Jaypee Brothers Medical Publi
shers, New Delhi,2004, page no.: 102 - 107.
• Maya Devi Subedi,“Manual of Midwifery A”, 1stEdition,
Chapter 11, AntenatalAdvice, Books and Stationers, 20
05, page no.: 157 - 165.
• Kamala Shova Napit,“Manual of Midwifery B”, 1stEditi
on, Chapter 4,Management of First Stage of Labour,publ
ished by Makalu Books and Stationers,2005, page no.: 4
1 to 64.
• Dutta dc ‘text book of obstetric & gynaecology ‘ 3rd
edition page no – 120-122.
