continence and micturition Flashcards
1
Q
what is the function of the urinary tract?
A
- collect urine
- store under safe conditions
- void when socially appropriate
- prevent reflux
- protects the kidney from increased bladder pressure by active peristalsis
2
Q
what is the function of the bladder?
A
- filling - continence, sensation of bladder volume and receptive relaxation
- voiding - voluntary initiation and complete emptying
3
Q
what are the 4 types of incontinence?
A
- stress
- urge
- anatomical
- rentention
4
Q
what is stress incontinence?
A
leakage when coughing or straining caused by a weak sphincter
5
Q
what is urge incontinence?
A
leakage with urgency caused by an overactive baldder
6
Q
what is anatomical incontinence?
A
continuous dribbling with normal voids
can be congenital or acquired
7
Q
what is the muscle within the bladder wall? what is it’s function? what innervates it?
A
- detrusor muscle
- squeezes against urine
- parasympathetic - pelvic nerve
- sympathetic - hypogastric nerve
8
Q
what provides conscious control of micturition? how?
A
pudendal nerve innervates the external urethral sphincter - relaxation allows micturition to take place
9
Q
what two ways can micturition be inhibited?
A
- sympathetically by the brain stem
- conscious by the motor cortex (this is learnt during toilet training as a child)
