Pelvis and Perineum Flashcards
What is the line of demarcation on the anterior and posterior surface for the transition from the trunk to the lower extremity
Anterior=Inguinal ligament
Posterior=Gluteal region
The greater pelvis protects the…
Abdominal viscera
Greater pelvic contents are _____, while lesser pelvic contents are…
Greater=abdominal
Lesser=pelvic
What bones make up the superior pelvic girdle?
- Ala of the ilia
- Base of the sacrum
The majority of these 2 bones make up the lesser pelvis (true pelvis)
-Pubic and ischeal bones
This compartment includes the surface of the trunk between the thighs and the butt
- extends from coccyx to butt
- includes the shallow surface lying deep to this area
Perineum
What seperates the lesser pelvis from the perineum?
Pelvic diaphragm
What is the cartilage between the 3 bones of the os coxa called?
Triradiate cartilage
What bones contribute to the formation of the acetabulum?
- Ilium
- Ischium
- Pubis
What are the 2 joints of the sacrum?
Anterior and posterior sacroiliac joints
Anterior sacroiliac joint=
Synovial joint
Posterior sacroiliac joint=
Syndesmosis
What do the synovial joints contain?
- Hyaline cartilage
- Synovial membrane
- Fluid and capsule
- Interlocking parts
- Auricular surfaces
T/F- There is very little mobility in the sacroiliac synovial joints
True
What are the 4 ligaments of the sacrum and os coxa?
- Iliolumbar
- Sacroiliac
- Sacrotuberous
- Sacrospinous
Where does the sacrotuberous ligament run?
- Posterior ilium
- Lateral sacrum
- Ischeal tuberosity
Where does the sacrospinous ligament run?
- Lateral sacrum and coccyx
- Ischeal spine
Greater sciatic foramen is for things leaving the ______
Pelvis
Lesser sciatic foramen is for things leaving the _____
Perineum
The ASIS is in the same verticle plane as the _____
Pubic Symphysis
The pubic Symphysis and the ______ are in the same horizontal plane
Ischeal spine
What are the 2 adjectives to describe the female pelvis
- Wide True Pelvis
- Shallow False Pelvis
This is the fixed distance between the sacral promontory and the pubic symphysis
Obstetrical conjugate
What are the apertures of the lesser pelvis?
- Pelvic inlet
- Pelvic outlet
- Obturator foramina
Anterior border of the true pelvis
-what does it bear the weight of?
- Pubic Symphysis
- Sup/Inf rami of the pubic bones
-Bears the weight of the bladder
Lateral border of the true pelvis
- Hip bones
- Obturator foramina and obturator membrane and obturator internist muscle
- Tendonous arch (thickened fascia)
Posterior border of the true pelvis
- Sacrum
- Coccyx
- Piriformis
- Ilium
This is the floor of the pelvis
Pelvic diaphragm
What is the role of the pelvic diaphragm?
- Supports abdominopelvic viscera
- Resists increases in intraabdominal pressure
- Relaxes to allow urination and defecation
