Micturition Flashcards
1
Q
Describe the neurological pathways involved in normal micturition.
A
Spinal reflex (S2-S4).
Facilitated and inhibited by higher centres.
Stretch receptors in bladder wall.
Parasympathetic efferents to detrusor
2
Q
Describe the muscles involved in micturition.
A
Detrusor muscle of the bladder - contraction is responsible for involuntary emptying.
External urethral sphincter - relaxes for voluntary emptying.
3
Q
What prevents vesico-ureteric reflux?
A
Oblique passage of ureters through bladder wall keeps ureters closed except during peristaltic waves.
