Lecture 1 - Pelvic Contents Flashcards
What is the bladder?
Muscular sac with a partial covering of peritoneum, ‘stuck’ against the pubic bones.
What makes up the bladder?
Transitional epithelium, with rugae.
What happens to the bladder as it fills?
It raises into the suprapubic region.
What is the urachus and where is it located?
It is the apex of the bladder, located posterior to the pubic symphysis.
What is the trigone?
The triangular base of the bladder, a trigone internal area of smooth mucous membrane.
Where does the urethra exit/enter the bladder?
The trigone.
What are the muscles of the bladder?
Muscular coat of smooth muscle, known as the detrusor. Also has the sphincter vesicae at the neck of the bladder.
Is the sphincter vesicae a full circle?
No, it is incomplete.
What is the neck of the bladder held in place by in males?
Puboprostatic ligament.
What is the neck of the bladder held in place by in females?
Pubovesical ligament.
What is the arterial supply of the bladder in males?
A superior and inferior vesicle artery from each side (branches of the internal iliac artery).
What is different about the arterial supply of the bladder in females compared to males?
The inferior vesicle artery usually corresponds to the vaginal artery in females.
What is the venous drainage of the bladder?
The vesicle plexus, which drains to the internal iliac vein.
What is the nerve supply to the bladder?
Autonomic nervous system - Inferior hypogastric plexus.
Where does lymph drain to from the ureters?
Lumbar, common/external/internal iliac nodes as they descend towards the bladder.
Where does lymph drain to from the bladder?
Mainly internal iliac (some superior to external iliac, some from neck to sacral nodes).
Where does lymph mainly drain to from the urethra?
Internal iliac.
Where else can lymph drain to from the urethra in females?
Some to sacral nodes.
Where else can lymph drain to from the urethra in males?
Spongy urethra to deep inguinal nodes.