Maternal anatomy
This presentation is the property of its rightful owner.
Sponsored Links
1 / 27

Maternal Anatomy PowerPoint PPT Presentation

  • Uploaded on
  • Presentation posted in: General

Maternal Anatomy. Chapter 2 Review Williams Obstetrics Felicia Katz 8/10/11. Anterior Abdominal Wall. Blood Supply. Femoral artery branches Superficial epigastric External pudendal Supply skin and subcutaneous tissue over lower abdominal wall and mons External Iliac branches

Download Presentation

Maternal Anatomy

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript

Maternal anatomy

Maternal Anatomy

Chapter 2 Review

Williams Obstetrics

Felicia Katz


Anterior abdominal wall

Anterior Abdominal Wall

Blood supply

Blood Supply

  • Femoral artery branches

    • Superficial epigastric

    • External pudendal

    • Supply skin and subcutaneous tissue over lower abdominal wall and mons

  • External Iliac branches

    • Inferior epigastric vessels

    • Supply muscles and fascia of lower abdominal wall



  • T7-12

  • Ilioinguinal (L1)

    • Skin of lower abdominal wall, upper portion of labia majora, and inner thigh

  • Iliohypogastric(L1)

    • Skin over suprapubic area

  • Course between layers of rectus sheath lateral to rectus muscle

External genitalia

External Genitalia



  • Non-keratinized squamousepithelium, smooth muscle layer

  • Upper 1/3 mullerian derived

  • Lower 2/3 urogenitalsinus derived

  • Lubricated by transudate across subepithelial capillary plexus

Vascular supply

Vascular Supply

  • Proximal portion supplied by cervical branch of uterine artery

  • Remainder by vaginal artery (variable origin)

  • Lower third and vulva lymphatics drain to inguinal nodes; remainder iliac nodes

Anterior and posterior triangles

Anterior and Posterior Triangles

Maternal anatomy


  • IAS: constant resting tone for fecal continence; may be torn with 4th deg lacs

  • Anal cushions: venous plexus; cause of hemorrhoids

  • Dentate line: external hemorrhoids painful 2/2 innervated stratefiedsquamous epithelium



  • Posterior aspect covered by visceral peritoneum (serosa)

  • Lower portion of anterior wall adjacent to bladder (dissected during c/s)

  • Nulliparous 6-8cm; multiparous 9-10cm

  • Majority of muscle fibers located at fundus, and at anterior and posterior walls as compared to lateral walls

  • Innervation

    • T11/T12 transmit pain sensation from contractions

    • Pudendal nerve transmits pain from lower vagina and skin



  • Squamous epithelium on ectocervix

  • Columnar epithelium on endocervix





Blood supply1

Blood Supply

Blood supply2

Blood Supply

  • Uterine artery

    • Branch of internal iliac

    • Courses along base of broad ligament toward cervix then branches in two and runs along uterine wall

    • Crosses over ureter 2cm from cervix

  • Ovarian artery

    • Direct branch from aorta

    • Enters broad ligament through IP ligament

    • Anastamoses with branch of uterine artery

Pelvic bony anatomy

Pelvic Bony Anatomy

Pelvic inlet

Pelvic Inlet

  • Posterior boundary = sacral promontory

  • Anterior boundary = pubic symphysis

  • Lateral boundary = lineaterminalis

    Measure adequacy of inlet via the obsetrical conjugate (subtract 1.5-2cm from diagonal conjugate)

Pelvic inlet1

Pelvic inlet

Mid pelvis


  • Ischial spines (10cm)



  • Posterior boundary = coccyx

  • Anterior boundary = pubic arch

Pelvis types

Pelvis Types

Pelvic floor

Pelvic Floor

  • Login