Flashcards in Pelvis Deck (57):
What two bony structures does the inguinal ligament connect to?
2. Pubic Tubercle
What rests on top of the PIRIFORMIS muscle?
Sacral Plexus (L4,L5, S1, S2, S3, S4)
The performs travels through the GREATER SCIATIC FORAMEN to the Greater trochanter of the Femur? What is its function?
LATERAL ROTATOR OF THE THIGH
What two muscles insert onto the Greater Trochanter? Onto the lesser trochanter?
1. Obturator & Piriformis
2. Iliacus M. & Psoas Major
What innervates the Obturator Internus? What is the function of this muscle?
Nerve to Obturator Internus
fx: LATERAL ROTATOR
What innervates the Piriformis muscle?
Ventral Rami L5, S1, S2
What nerve innervates Psoas & Iliacus?
1. Psoas = Ventral Rami of L1
2. Iliacus = FEMORAL N.
What two muscles form the pelvic diaphragm?
1. Coccygeus Muscle
2. Levator Ani
What is the mnemonic for the order of vessels & nerve in regards to Femoral Nerve?
(from lateral to medial)
What structures pass through the Obturator Canal? Where is the nerve passing through this canal found in relation to the PSOAS muscle?
Obturator Nerve & Artery
- found MEDIAL to Psoas Major
The limbo sacral trunk is the first section of the Sciatic Nerve. What lumbar branches make up this trunk?
L4 & L5
What is the nerve responsible for the sex organs?
- S2,3,4 keeps the junk off the floor*
What is everything ABOVE the Piriformis muscle? Below?
Above = Superior Gluteal Nerve & Artery
BELOW = Inferior Gluteal
What muscle makes a 90 degree turn out the lesser sciatic foramen to the Greater Trochanter?
- sits over Obturator Foramen
What provides the ADDED support to the Pelvic Diaphragm? ( reinforces Levator Ani & Coccyges)
What artery becomes the FEMORAL Artery once it crosses the Inguinal Ligament?
What artery is found between the Lumbosacral Trunk & S1 root, which leaves out the Greater Sciatic Foramen?
Superior Gluteal Artery
What artery leaves the Greater Sciatic foramen, loops around the Sacrospinous Ligament, and returns back through the Lesser Sciatic Foramen?
Internal Pudendal Artery
What is the largest artery that also provides the Medial umbilical Fold? What division of the Internal Iliac A. is it?
- ANTERIOR DIVISION
What arteries are part of the posterior division of the Internal Iliac? Of the ANTERIOR?
3. Superior Gluteal
- Superior Vesicle
3. Inferior Vesicle (Vaginal & Uterine A in female*** test)
4. Middle Rectal
5. Inferior Gluteal
6. Internal Pudendal A.
What artery is not found in females but instead is the Vaginal & Uterine Artery in females?
(replaced by Uterine A.)
Where does the Superior Rectal, Middle Rectal, & Inferior Rectal Originate from?
Superior Rectal = IMA
Middle Rectal = Anterior Division of Internal Iliac
Inferior Rectal = off of INTERNAL PUDENDAL
Which artery is found on the anterior abdominal wall?
What branch does the EXTERNAL ILIAC send off?
What are the two important ligaments that form the Greater & Lesser Sciatic Notch?
What is a site of possible infection in the female?
Recto-uterine Pouch of Douglas**
The Pelvic Splanchnics are parasympathetic or sympathetic?
- pee & stop
- poo & stop
POINT & SHOOT (sympathetic)
Is the Superior Hypogastric Plexus sympathetic or parasympathetic?
Everything in the bladder is composed from ENDODERM except the _____ which is which layer?
Nerve supply to the bladder is
Pelvic Plexus which is (parasympathetic/sympathetic) & Pelvic Splanchnics which are (parasympathetic/sympathetic)? CHOOSE ONE
Pelvic Plexus = Sympathetic
Pelvic Splanchnics = PARASYMPATHETIC
The vas deferent enters through the deep ring or superficial ring?
What is located lateral to vas deferent and superior to prostate?
The true pelvis is pelvis major or pelvis minor?
What ar the 3 contents of the pelvis?
3. Uterus/Vagina (females) or Prostate Gland (males)
What Nerves & Arteries travel through the Lesser Sciatic Foramen?
Pudendal Nerve & Artery
What two muscles are the lateral rotators of the thigh?
Piriformis & Obturator Internus
What is found above the arcuate line of the pelvis? Below?
ABOVE = FALSE pelvis
Below = TRUE pelvis
What muscle sits on the
1. Posterior Pelvic wall
2. Lateral Pelvic Wall
3. forms the FLOOR of the pelvic cavity
1. Posterior = Piriformis*
2. Lateral = Obturator
3. Floor = Levator Ani + Coccyges (DIAPHRAGM)
What transmits the obturator Nerve & artery?
OBTURATOR CANAL in the Obturator Foramen
What is the name of the tendinous arch where the Levator Ani Muscle intersects the Obturator Muscle?
Where does coccyges originate from? Obturator INternus? Performis?
1. SACROSPINOUS Lig.
2. Obturator Foramen (to greater trochanter)
3. Anterior surface of sacrum (t greater trochanter)
Piriformis Muscle goes out through the _______ Foramen, to _____ rotate the thigh.
GREATER SCIATIC FORAMEN (attach to Greater Trochanter)
- LATERAL ROTATOR of the thigh*
When the mesentery is lost, the colon is called the ___
What is the blood supply to the Rectum?
1. Superior Rectal ( IMA)
2. Middle Rectal (Internal Iliac - Anterior Division)
3. Inferior Rectal (Internal Pudendal)
What porto-systemic anastomoses causes hemerrhoids due to hypertension in the venous system?
= Superior, Middle & Inferior Rectal Veins
What forms the hypogastric plexus?
Pelvic Splanchnics & Superior Hypogastric (R&L hypogastric Nerves)
What is the blood supply to the bladder?
Superior Vesicle (off of Umbilical A. ) & Inferior Vesicle (Or Uterine A. in females)
What does the PROSTATE provide that combats the acidic environment of the vagina?
ALKALINE SOLUTION through the Colliculus (little openings)
Vagina has a low pH to help fight bacteria
The vas & the seminal vesicles form the ______
(vas deferens enters thru deep inguinal ring)
Where is the seminal vesicle located?
Superior to prostate, lateral to VAS DEFERENS
What looks like chewed bubble gum?
What is the course of sperm?
vas--> seminal vesicle --> ejaculatory duct --> prostatetic urethra --> membranous urethra --> spongy urethra
What are the two bends of the uterus?
What are the ligaments of the uterus? What ligament has all the blood vessels to the uterus and is LATERALLY spaced? Which is medial?
2. SUSPENSORY LIGAMENT**
3. Ovarian LIgament**
What vacuums up the OVA?
- can get an ectopic pregnancy*
What is the mnemonic "water under the bridge"?
The uterine artery travels OVER the Ureter
- important for Hysterectomy