Lower Abdomen 2 - ACht Flashcards
What structure makes up the base of the bladder trigone?
the interureteric fold (or crest)
The pectinate line divides what exactly?
(I’m looking for embryological origin and blood supply)
- Proximal from this line
- the rectum is dervied from primitive endoderm
- veins drain into systemic internal iliac
- arterial supply = inferior mesenteric artery
- Distal to this line
- the mucosa is derived from ectoderm.
- veins drin into the portal system
- arterial supply = pudendal artery
The rectal sinuses and columns are folds of mucosa overlying what? What common pathology forms here?
They overly the venous plexus formed by the anastamoses of the superior and inferior rectal veins.
Internal rectal hemorrhoids occur here
FEMALE
The internal iliac artery divides into an anterior and posterior division. What are the major branches of the anterior division?
(Marked with an A on the picture)
- Obturator
- Umbilical (runs into medial umbilical ligament)
- superior vesical
- Uterine
- Vaginal
- Inferior Vesical
- Middle rectal
ID what the arrows point to:
The internal iliac artery divides into an anterior and posterior division.
What are the main arteries of the posterior division?
ID the arrows
ID the arrows
What artery passes right between the lumbosacral trunk and S1?
The superior gluteal artery
Try to ID the arrows on this side view of the male pelvis:
Name for the more internal and more external layers of the uterus?
Endometrium (internal)
Myometrium (external)
During a culdocentesis, fluid is removed by a needle that pierces through the posterior fornix of the vagina.
What space is fluid being drawn from?
The rectouterine pouch!
Name the parts of the uterus:
What is the name of the duct within the prostate, formed where the vas deferens and seminal vesicle duct meet? (paired structure)
Ejaculatory duct
The prostate has four zones:
Central, Anterior, Transitional, Peripheral
Describe the MAIN point about each
Central - Surrounds ejaculatory duct, cancer unlikley
Anterior - Fibromusclar stroma, no glandular tissue
Transitional - Surrounds urethra, BPH occurs here, some cancer
Peripheral - CANCER here, Palpable on rectal exam, 70% glandular
