Urinary/renal system 3 Flashcards
What is transitional epithelium
Stratified rounded cells
Flattened and stretched - protection
What are the ureters
Slender tubes carry urine from kidney to bladder
Where is the Ureters located
Arise from each renal pelvis at hilum - descends retroperitoneally through abdomen
What moves urine to bladder
Peristaltic waves
What are the three layers of the ureter
Transitional epithelium
Muscularis (inner longitudinal and outer circular)
Adventitia - outer - fibrous connective tissue
What is on the inner surface of the ureter
Folded protective protein plaques
What acts as a sphincter/valve to the ureter
A the bladder increases pressure it compresses it and prevents backflow
Where are the ureter in relation to the bladder
Run obliquely through wall of bladder at its posterolateral corners
Describe the bladder
Collapsible muscular sac - stores and expels urine - with rugae
How do the rugae affect bladder expansion
The bladder expands without great increase in pressure
What does the urethra do
carries urine out of the bladder
What is the trigone
Triangular region between 2 openings of ureters and the urethra - can pool
Describe an empty bladder
Pyramidal - within pelvis
Describe full bladder
Spherical - Expands superiorly into abdominal cavity - palpated above pubic symphysis
Where is the male bladder located
Anterior to rectum
Superior to prostate
