Pelvis and Perineum Flashcards
What muscles support ad raise the pelvic floow
The coccygeus and the levator ani
What are the three levator ani muscles?
puborectalis, pubococcygeus and iliococcygeus
What is the innervation of the levator ani muscles?
Perineal branch of the pudendal nerve
What are the two erectile tissues of the penis?
corpus spongiosum and corpus cavernosum,
What is the primary blood supply for the pelivic viscera and perineum?
Internal iliac artery
What is the rectouterine pouch also known as?
The pouch of douglas
What contains ovarian vessels, nerves and lymphatics?
The suspensory ligament of the ovary
What are the two main nerves of the sacral plexus?
Sciatic and pudendal nerves
What is the main artery that supplies the bladder?
branches of the internal iliac artery - vesicular arteries
What is the muscle of the bladder?
Detrusor muscle
What makes the angles of the trigone of the bladder?
Internal urethral orifice and the two ureteric orifices.
What is the sympathetic supply of the bladder and what does sympathetic innervation result in?
T11-L2/3 to the vesical plexus primarlily through the hypogastric plexus - stimulation = relaxing of detrusor muscle and closing of the internal sphincter
What afferent nerve senses bladder filling, pain and urinary flow?
Pelvic/pudendal nerves
What somatic nerve causes contraction of the external urethral sphincter?
pudendal nerve
What is the PSS supply to the bladder and what does it cause?
S2-S4 causes contractoion of detrusor and opening of internal sphincter
