The pelvic floor Flashcards
How do the pelvic floor muscles maintain contenance?
- The external urethral sphincter contracts to stop leakage from the bladder
- The puborectalis muscle acts like a sling around the bladder and rectum, maintaining a 80 degree flexion at the opening of the urethra
How can the pelvic floor be damaged and what effects does this have?
Damaged by:
- CHILDBIRTH (ligament stretch, muscle stretch, nerve stretch, muscle and perineal body tear)
This weakens the pelvic floor leading to incontinence and pelvic organ prolapse.
What muscle makes up the majority of the deep layers of the pelvic floor?
Levator ani muscles- pubococcygeus and iliococcygeus muscles
What is the urogenital hiatus?
A u shaped hole in the front of the levator ani muscles, where the vagina, rectum and urethra run through
What is the function of the pelvic floor muscles?
- suspend organs in the right place
- resist rises in intra abdominal pressure
- maintain continence
- facilitate defecation and micturition
What muscle makes up the external urethral sphincter?
The deep perineal muscles
What is the role of he perineal body?
A point of attachment for the pelvic floor muscles to fuse at
What 3 muscles make up the superficial perineal muscles in women?
ischiocavernous muscle, bulbocavernous muscle, external anal sphincter muscle
What is vaginismus?
Constant contraction of the pelvic floor muscles, making penetrative sex painful
What blood vessels supply the pelvic floor muscles?
pudendal arteries and veins
To where do the lymphatics of the pelvic floor muscles drain?
Inguinal nodes
What nerve supplies the pelvic floor muscles?
The pudendal nerve
What is a cystocele?
prolapse of the urethra or bladder into the vagina
what is a rectocele?
Prolapse of the anus into the vagina
what is a uterine prolapse?
uterus prolapsing down into the vagina