Incontinence lecture notes

Question 1

What is incontinence?

Answer 1

Unintentional passing of urine

Question 2

Where in brain controls storage/voiding phase

Answer 2

Pontine micturition centre

Question 3

Who has no control of when voiding occurs?

Answer 3

Older age and non-potty trained children

Question 4

What are the motor nerves involved in storage and voiding?

Answer 4

Pelvic nerve, hypogastric nerve and pudendal nerve

Question 5

What kind of control does pelvic nerve provide?

Answer 5

Parasympathetic, bladder contraction

Question 6

During bladder filling is sympathetic on or off?

Answer 6

Sympathetic (storage) on

Question 7

Storage reflex:

Distension of bladder produces low-level bladder afferent firing of pelvic nerve

Triggers guarding reflex:
sympathetic outflow in the ______ nerve to bladder outlet
Pudendal outflow to external urethral sphincter

Sympathetic outflow also inhibits contraction of detrusor muscle

Answer 7

hypogastric nerve

Question 8

Voiding reflex:

Intense bladder-afferent firing in pelvic nerve

Triggers s_______ reflex
Afferent signals passed to Periaqueductal Gray
Pontine micturition centre

PMC on/off switch

Answer 8

spinobulbospinal reflex