OAB & Urinary Rentention Flashcards
The main function of bladder is to:
Store and expel urine
Which body part contracts to notify the brain that the bladder is filling with urine?
Detrusor muscle
When the bladder nears storage capacity, which type of signals are sent from the bladder to the brain?
Afferent
The ____ runs form the spinal cord to the appendages and you have to consciously and voluntarily make this system move or work.
Peripheral nervous system
The ____ is a large, triangular bone at the base of the spine and at the upper and back part of the pelvic cavity, where it is inserted like a wedge between the two hip bones.
Sacrum
_____ is the neurotransmitter in the parasympathetic nervous system that stimulates the muscarinic receptors
Acetylcholine or ACH
______ are labeled sacral nerves
Sacral nerves
In your own words, explain how normal storage and voiding function works.
As the bladder fills with urine, the destrusor muscle relaxes and the pelvic floor contracts.
Afferent signals are sent fro the bladder to the brain at the unconscious level.
When the conscious decision to void is made, efferent nerve impulses are sent from the brain to the bladder.
The pelvic floor relaxes and the detrusor muscle contracts. Urine is expelled from the body.
Which muscarinic receptors are found in the bladder and primarily responsible for voiding behavior?
M2 and M3
______ trigger reflex voiding in response to noxious stimuli
C fibers
Which statement is incorrect?
- Normal storage relies on efferent signals to the bladder from the pontine micturition center of the brain
- Acetylcholine attaches to M2 and M3 muscarinic receptors, initiating bladder contraction
- under voluntary voiding activity in cerebrum, the external urinary sphincter, pelvic floor muscles, and detrusor muscles relaxes, allowing the bladder to empty completely of urine.
- the average void is approximately 360cc and there is typically less than 100cc left in the bladder after voiding
under voluntary voiding activity in cerebrum, the external urinary sphincter, pelvic floor muscles, and detrusor muscles relaxes, allowing the bladder to empty completely of urine.
True/false:
A contraction of the detrusor muscle is what informs the brain that there is a need to void
True
T/F
Urine enters the bladder through the urethra
False
T/F
The trigone connects the ureteral orifices and the bladder neck
True
T/F
Muscles in the external urinary sphincter are under voluntary control
True
The main function of the bladder is to store urine? T/f
False
When the bladder is filling with urine, afferent signals are sent from the bladder to the brain. T/f
True
When the cerebral cortex is the area of the brain responsible for bladder control. T/f
False
The release of the ACh in the synapses binds with the M2 and M3 muscarinic receptors in the bladder, which causes a contraction of the detrusor muscle. T/F
True
Enteric nerves of the autonomic nervous system are directly responsible for controlling the gastrointestinal system and bowel
True
Urgency incontinence
The involuntary loss of urine sometimes associated with a sudden strong desire to void
Urgency frequency
An uncontrollable urge to urinate resulting in frequent, small amounts of urine. Posed as often as every 15 minutes
Urinary retention
The inability to empty bladder or initiate a void (urine is retained in the bladder)
Overactive bladder
Urinary urge incontinence or urgency frequency, occurring either alone or in combination. When the detrusor muscle in the bladder receives a sudden involuntary signals to contact before you are ready to urinate
