micturition

1. bladder fills with urine

2. walls stretch

3. stimulate stretch receptors

4. sensory impulses to spinal cord

5. relayed to cerebral cortex/micturation reflex center

 

6. Conscious desire to expel urine

 

7. parasympathetic impulses to bladder wall

8. detrusor muscle contracts

9. internal sphincter relaxes

10. external sphincter relaxed (voluntarily)

11. Micturition

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