Pelvic Walls, Floor and Contents - Male Flashcards
What are the differences between the general structure, greater pelvis and letter pelvis of the male and female?
MALE
General structure - thick and heavy
Greater pelvis - deep
Lesser pelvis - narrow and deep
FEMALE
General structure - thin and light
Greater pelvis - shallow
Lesser pelvis - wide and shallow
What parts of the pelvis are the true and false pelvis?
True pelvis = lesser pelvis
False pelvis = greater pelvis
What are the differences between the pelvic inlet and pelvic outlet of the male and female?
MALE
Pelvic inlet - heart shaped
Pelvic outlet - comparatively small
FEMALE
Pelvic inlet - oval and rounded
Pelvic outlet - comparatively large
What are the difference between the sub-pubic angle, obturator foramen and acetabulum of the male and female pelvis?
MALE
Sub-pubic angle - narrow
Obturator foramen - round
Acetabulum - large
FEMALE
Sub-pubic angle - wide
Obturator foramen - oval
Acetabulum - small
What are the articulation of the pelvic bones?
Sacroiliac joint
Pubic symphysis
Hip joint
What are the components of the pelvic bone?
Ilium
Pubis
Ischium
What is the name given to the socket formed by the fusion of the ilium, pubis and ischium?
Acetabulum
At what age does the acetabulum become complete?
20-25 years old
What does the acetabulum provide?
Articulation with the head of the femur to form he hip joint
What part of the pelvic bone is the ilium, and what are its features?
Superior part
Widest and largest of the three parts
What forms the superior part of the acetabulum?
Body of the ilium
What is the inner concave surface of the ilium known as? What does it provide origin to?
Iliac fossa
Provides origin to the iliac muscle
What does the external surface of the ilium provide attachment to?
Gluteal muscles
Why is the anterior superior iliac spin an important anatomical landmark?
Halfway between the ASIS and the pubic symphysis the femoral artery can be palpated
Midpoint of inguinal ligament is located halfway between ASIS and pubic tubercle
What is the most anterior portion of the pelvic bone? What are its features?
Pubis
Body, superior ramus, inferior ramus
What does the body of the pubis articulate with?
The opposite pubic body at the pubic symphysis
The superior ramus of the pubis extends laterally from the body to form part of what?
The acetabulum
The two rami of the pubis enclose what?
Part of the obturator foramen through which obturator nerve, artery and vein pass to reach the lower limb
What forms the postero-inferior part of the pelvic bone? What are its features?
Ischium
Body, inferior ramus, superior ramus
The inferior ramus of the ischium combines the th inferior pubic ramus to form what?
Isciopubic ramus, which encloses part of obturator foramen
On the posterior aspect of the ischium there is an infestation known as
the greater sciatic notch
The sacrospinus ligament runs from the ischial spine to the sacrum, creating
the greater sciatic foramen, through which the lower limb neurovasculature travels
The sacrotuberous ligament runs from the sacrum to the ischial tuberosity, forming the
lesser sciatic foramen
What are the components of the pelvic girdle?
Two pelvic bones
Sacrum
Coccyx
What are the articulation of the pelvic girdle with the pelvis?
Sacroiliac joints
Sacrococcygeal symphysis
Pubic symphysis
What are the functions of the pelvis?
Transfer of weight from upper axial skeleton to the lower appendicular components
Provides attachment for muscles and ligaments
Contains and protects the abdominopelvic and pelvic viscera
What is the greater pelvis?
Superior portion of the pelvis (false pelvis) which provides support to the lower abdominal viscera
What is the lesser pelvis?
The inferior (true) portion of the pelvis, pelvic cavity and pelvic viscera lie in this
What is the pelvic inlet?
The junction between the greater and lesser pelvis
What are the borders of the pelvic inlet?
Sacral promontory
Arcuate line and pectineal line
Pubic symphysis