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Anatomy of the Pelvis
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  • Course
  • MEDI1060
  • Institution
  • VinUniversity
  • Book
  • Grays Anatomy For Students

The summary of class notes + textbook for the human anatomy. In-depth description of the bones, muscles, fascias, and organs of the body with related clinical cases of the reproductive system

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Document information

  • April 1, 2023
  • 19
  • 2022/2023
  • Class notes
  • Avinash bharadwaj
  • All classes

Subjects

  • anatomy
  • pelvis
  • reproductive system

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Pelvic + Pelvis Viscera
Pelvis
The pelvic cavity is similar to a tilted
basin / cup

⇒ The tilting makes it hidden
behind the pubic symphysis

In a sagittal section, it is a
downward extension of the
abdominal cavity

The content of the pelvic cavity are:

Caudal part of GIT

Parts of urinary + reproductive
systems

And all those blood vessels
+ nerves + lymphs




Pelvic Bones
Sacrum:

Ventral + Dorsal
foramina

Sacral hiatus



Pelvic + Pelvis Viscera 1

, The wall of the pelvis are formed by
2 hip bones + sacrum

However, the ilium extends
upwards beyond the pelvic cavity

The upper ilium form the walls
of iliac fossae of the abdomen,
aka false (greater) pelvis

The lower portion is the true
(lesser) pelvis

AKA birth canal in females

Sexual Dimorphism:

The female pelvis is broader in general in most dimensions

1. Greater sciatic notch is wider →
pushes the sacrum backwarads,
increasing capacity




2. The ala of the sacrum is wider →
increases transverse dimension of



Pelvic + Pelvis Viscera 2

, inlet

3. Pubic bone is wider → increases
inlet + outlet dimension

4. Subpubic angle is wider → pushes
the ischial tuberosities laterally →
increases transverse diameter of
outlet




True Pelvis
Pelvic Inlet
Boundaries:

Upper inlet of pelvic cavity

Sacral promontory + sacral ala

Arcuate line on ilium, pubic
bone and symphysis




Dimensions:

Inlet

AP diameter = centre of sacral
promontory → anterior end of
pubic symphysis



Pelvic + Pelvis Viscera 3

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