Bladder Function (Lecture 11) Flashcards Preview

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Flashcards in Bladder Function (Lecture 11) Deck (17):
1

where are the LMN cell bodies located for external urethral sphincter located?

S2,3,4 (Onuf's nucleus)

2

where are the LMN cell bodies located for bladder detrusor muscle located?

S2,3,4 in intermediate spinal grey matter (parasympathetic)

3

where are 1st order cell bodies for sensation from the bladder

dorsal root ganglia for S2,3,4

4

function of pontine micturition area

allows relaxation of external urethral sphincter

5

function of sensorimotor spincter control area

-brings to consciousness that bladder is full
-inhibits frontal micturition inhibiting center

6

will damage to one side of the brain cause problems with micturition

no

7

damage to bilateral hemispheres causes

no voluntary control over bladder
bladder will empty completely

8

bilateral damage anywhere other than cerebral hemispheres causes

no voluntary control
bladder will not completely empty

9

autonomic dysreflexia

caused by elevated sympathetic activity below lesion and decreased sympathetic activity above lesion
-leads to dangerously high blood pressure

10

what spinal level injury is at risk for autonomic dysreflexia

T6 and above

11

what position should you place a person experiencing autonomic dysreflexia in?

Sit patient up
DO NOT put head down
-find out what the problem is (tight clothes, need to urinate, etc)

12

is detrusor muscle under voluntary or involuntary control?

involuntary

13

function of bladder detrusor muscle

push urine out of bladder
-reflexively activated when bladder is full

14

function of frontal micturition inhibiting area

sends inhibitory axons to pontine micturition center

15

function of pontine micturition center

inhibits external sphincter muscle in response to a full bladder (allows urine to leave bladder)

16

external urethral sphincter under (voluntary/involuntary) control

voluntary (muscle is always active, unless you want to relax it to allow urine to leave bladder)

17

what pathways does the bladder information utilize

dorsal column medial lemniscal
anterolateral pathway
(bilaterally)