Bladder - Ojemann Flashcards
1
Q
What are the three muscular components involved in micturition?
A
Muscles of the pelvic floor
Detrusor
Smooth muscle sphincters
2
Q
What is the innervation of the detrusor (location, nature of)?
A
Detrusor is innervated by preganglionic parasympathetic fibers originating in the S2-S4 segment of the spinal cord.
Hypogastric nerves
3
Q
What is the innervation of the smooth muscle sphincters (location, nature of)?
A
The smooth muscle sphincters receive sympathetic innervation from the T10-L2 levels of the spinal cord.
Pelvic nerves
4
Q
What is the innervation of the skeletal muscles of the pelvic floor (location, nature of)?
A
Somatic motor innervation by alpha motor neurons from S2-S4.
Pudendal nerves
