Question

What are the main events of micturition?

Answer 1

Micturition

1. Urination, also known as micturition, is the process of transferring urine through the urethra from the urinary bladder to the outside of the body.
2. The urinary system uses this mode of excretion.
3. As the urinary bladder fills with urine, it expands.
4. Stretch receptors in the bladder walls are activated, signaling the sacral spinal cord's micturition center.
5. The detrusor muscle, which responds to rhythmic contractions, receives parasympathetic nerve impulses.
6. Urination is prevented by the cerebral cortex.
7. The external urethral sphincter relaxes after the decision to urinate is made.
8. Micturition reflex is aided by hypothalamic and pons signals.