Lecture 24: Male Pelvic Cavity Flashcards
The pelvic cavity is formed by the ___ bones, the __, and the ___
hip bones; sacrum; coccyx
___: supports and protects the pelvic viscera, transmits upper body weight to lower extremities, provides a stable base for lower limb function, and forms birth canal
Bony pelvis
Each hip bone is formed by three bones that are fused at puberty:
1) ??
2) ??
3) ??
1) Ilium
2) Ischium
3) Pubis
What are the two joints of the pelvis?
1) Pubic Symphysis
2) Sacroiliac Joint
Which joint of the pelvis is a relatively immobile fibrocartilaginous joint?
Which pelvic joint is a synovial joint form between right and left ilia and sacrum?
Pubic Symphysis
SI Joint
True or False: Minimal gliding rotational movements occur at the SI joint
True
What are the two ligaments of the pelvis?
1) Sacrotuberous Ligament
2) Sacrospinous Ligament
Which pelvic ligament attaches to the ischial tuberosity and sacrum?
Which pelvic ligament attaches to the ischial spine and the sacrum?
Sacrotuberous Ligament: attaches to ischial tuberosity + sacrum
Sacrospinous Ligament: attaches to ischial spine and sacrum (also deep to sacrotuberous ligament)
The sacrotuberous and sacrospinous ligaments transform the greater and lesser sciatic notches into the ____ and ____ sciatic foramina
greater; less
The superior pelvic aperture is also known as the ____
The inferior pelvic aperture is also known as the ___
pelvic inlet
pelvic outlet/birth canal
Pelvis major is known as the ____ while the pelvis minor is known as the ___
pelvis major = false pelvis
pelvis minor = true pelvis
___ delineates the pelvic inlet/superior pelvic aperture
Pelvic brim
True or False: Pelvis minor is inferior and contains PELVIC viscera, while Pelvic major is superior and contains ABDOMINAL viscera
True
The inferior pelvic aperture is delineated by the ____, ____, ____, and ____
ischial tuberosities, ischial spines, ischiopublic rami, and coccyx
True or False: Perineum is a diamond shaped area
True
_____: the investing fascias of the pelvic m. that line the pelvic cavity and are continuous with abdominal muscular fascia
Parietal Pelvic Fascia
____: peritoneum that invests abdominal organs and extends into the true pelvis, as well as partially invests pelvic organs, forming spaces and folds between them
Pelvic Peritoneum
True or False: Both males and females have spaces on either side of the rectum (pararectal fossa) an the urinary bladder (paravesical fossa)
True
Which sex has a pouch located between the rectum and seminal vesicles/urinary bladder (rectovesical) and a fold between the sacrum and prostate/bladder (sacrogenital)?
Male only
Fractures of the hip bone are considered ___ fractures
pelvic fractures
___ and ____ are muscles of the lateral pelvic wall
Piriformis m and Obturator internus m.
Which pelvic muscle of the lateral wall is the site of the sacral pelxus?
Piriformis muscle
True or False: Both the Obtruatory Internus m. and the Piriformis m. insert onto the femur
True
The obtruator internus m. is the tendon the exits the pelvis via the ___
The piriformis m. is the tendon that exits the pelvis via the ______
lesser sciatic foramen
greater sciatic foramen
The pelvic floor is formed by the ____
pelvic diaphragm (bowl shaped group of skeletal muscles that partially closes off the pelvic outlet and supports the abdominopelvic viscera)
True or False: The pelvic diaphragm partially closes off the pelvic out when intra-abdominal pressure is raised (as in coughing or straining)
True
___: pulls coccyx anteriorly and supports pelvic viscera; wags tails in other mammals
Coccygeus
____: elevates pelvic floor to resist/raise intra-abdominal pressure (Important for forced expiration, coughing, or vomiting)
Levator Ani
Where does the piriformis nerve exit the pelvis?
Greater Sciatic Foramen
____ transmits obturator n/a/v and connects the abdominopelvic region with medial part of thigh
Obturator Canal
True or False: The lesser sciatic foramen connects the gluteal region with the perineum
True