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
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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