Urinary Tract and Pelvis Flashcards
How is the urethra oriented for catheterization?
Oriented anteriorly
The true and false pelvis is separated by what?
The pelvic inlet
If you damage S2 to S4 you will have trouble with what?
Trouble with urethral m and sphincters
What nerve roots is the skeletal muscle in perineum and pelvic floor including urethral and anal sphincters controlled by?
S2 to S4
Somatic motor and sensory innervation of the perineum is via what nerve and roots?
S2 to S4
Where is a pudendal nerve block performed?
Medial to the ischial tuberosity
What artery supplies the pelvis?
Internal iliac artery and branches
Anterior iliac artery (supplies bladder)
Posterior iliac artery (supplies posterior structures and anus)
The deep pelvic structures drain into what? (bladder, rectum, pelvic genital organs and terminal part of the urethra)
Internal and external iliac chains
The deep perineal structures drain into what? (urethra, external urethral sphincter, and the vagina in the female.)
Internal iliac chain
The superficial perineal structures (penis, scrotum, clitoris and labia) drain into what?
Superficial inguinal nodes
Other superficial perineal structures such as the glans penis, glans clitoris, labia minora and inferior end of the vagina drain into what two areas?
Deep inguinal nodes and external ililac chain
The ovaries and related uterine structures and the testes drain into where?
Lateral and pre-aortic nodes
The gluteal nodes drain into the
Internal iliac chain
Drainage from the lower extremities is into where?
Superficial and deep inguinal nodes
How are the deep parts of the perineum drained?
Internal pudendal-> internal iliac-> aortic nodes
How are the superficial and external genitalia parts of the perineum drained?
Superficial inguinal nodes-> deep inguinal nodes-> external iliac nodes
Ovaries and testes drain straight into which nodes?
Periaortic
Why is a womans urethra more disposed to cystitis?
Because its shorter
What are the boundaries of the perineum?
Well the urogenital triangle is located here and so is the anal triangle. Boundaries include:
- Pubic symphysis
- ischium
- sacrotuberous ligament
What is the nerve supply to the perineum?
Pudendal nerve
What is the arterial supply to the perineum?
internal pudendal artery
The pelvic diaphragm consists of what two important strucutes?
levator ani and coccygeus
What is the levator ani comprised of?
Pubococcygeus, puborectalis, iliococcygeus