Anatomy: urinary incontinence Flashcards
what are the 5 types of nerve fibres
sensory: somatic sensory, visceral afferent.
Motor: somatic motor, parasympathetic, sympathetic
what are somatic sensory nerve fibres
sensations from body wall –> CNS
what are visceral afferent nerve fibres
organs internal environment –> CNS
what are somatic motor nerve fibres
motor response to body wall eg skeletal muscle (voluntary)
what are parasympathetic and sympathetic nerve fibres
CNS –> internal organs
how many cranial and spinal nerves do you have
12 cranial, 31 spinal
what outflow does sympathetic nerve fibres have
t1-L2 (thoracolumbar) outflow - with spinal nerves
which type of nerve fibres travel the entire length from origin to destination
somatic motor and sensory
where do sympathetic fibres synapse, what nerves continue to the body and by what route
body wall, splanchnic nerves, follow arteries
how do sympathetic fibres het from CNS to kidneys, ureters and bladder (presynaptic)
leave between T10-L2, enter sympathetic chains within abdominoplevic splanchnic nerves, synapse around abdo aorta
how do postsynaptic sympathetic nerve fibres get to kidneys, ureters and bladder
pass to surface of arteries towards organs (periarterial plexus)
how do sympathetic fibres het from CNS to kidneys, ureters and bladder (presynaptic)
leave between T10-L2, enter sympathetic chains within abdominoplevic splanchnic nerves, synapse around abdo aorta
how do postsynaptic sympathetic nerve fibres get to kidneys, ureters and bladder
pass to surface of arteries towards organs (periarterial plexus)
how do sympathetic nerves leave the CNS
4 cranial nerves (3,7,9,10) and sacral - craniosacral outflow
where do sympathetic fibres synapse, what nerves continue to the body and by what route
on the organ itself, pelvic splanchnic nerves
what parasympathetic nerve innervates the kidneys and ureters
CNX
what parasympathetic nerve innervates the bladder
pelvic splanchnic nerves
what part of renal tract has somatic nerve fibres
only within perineum eg urethra and it’s sphincter
how do visceral afferents from the kidneys get to the spinal cord and what level fo they enter
alongside sympathetic fibres and enter at T11 and L1
what role do dermatomes have in kidney pain
patient feels pain in corresponding dermatomes from that spinal level
where do visceral afferents enter spinal cords for bladder and ureters, describe the pain of each
run along sympathetics T11 and L2, ureter loin –> groin, bladder: dull suprapubic pain
where do visceral afferents from proximal urthethra enter spinal cord and along which fibres, what type of pain is it
S2-S4, parasympathetic, sharp pain in perineum
what nerves are involved in urine flow
S2-S4 level nerves
how does the bladder relay do the brain its full and what muscle is stimulated
visceral afferent nerves –> CNS via S2-S4, detrusor muscle (potty trained voluntarily contract external sphincter and levitator ani)
how does the bladder empty (muscles and nerves)
detrusor muscle contracts (para), internal urethral sphincter relaxes (para) and levator ani (somatic motor) relax, abdo wall contracts to increase pressure (somatic motor)
where does the pudenal nerve form
S2-S4
