Explain micturition.
(N/A) Micturition is the process by which urine is expelled from the urinary bladder.
As urine accumulates in the bladder,its muscular walls stretch.
This stretching stimulates sensory nerves in the bladder wall,which sends signals to the central nervous system,initiating a micturition reflex.
This reflex triggers the urge to urinate.
To release urine,the urethral sphincter relaxes while the smooth muscles of the bladder wall contract.
This coordinated action forces urine out of the body through the urethra.
An adult human typically excretes about $1-1.5 \text{ litres}$ of urine per day.
As urine accumulates in the bladder,its muscular walls stretch.
This stretching stimulates sensory nerves in the bladder wall,which sends signals to the central nervous system,initiating a micturition reflex.
This reflex triggers the urge to urinate.
To release urine,the urethral sphincter relaxes while the smooth muscles of the bladder wall contract.
This coordinated action forces urine out of the body through the urethra.
An adult human typically excretes about $1-1.5 \text{ litres}$ of urine per day.
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Urine is stored in the urinary bladder until signals are received from the Central Nervous System $(CNS)$ which are . . . . . . .
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View SolutionDuring micturition,which of the following occurs?
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View SolutionCorrect the statement given below by choosing the right option shown in the bracket against it:
The faeces in the rectum initiate a reflex causing an urge for its removal (neural/hormonal).
The faeces in the rectum initiate a reflex causing an urge for its removal (neural/hormonal).
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View SolutionThe outline of the principal events of urination is given below in an unordered manner:
$I.$ Stretch receptors on the wall of the urinary bladder send signals to the $CNS$.
$II.$ The bladder fills with urine and becomes distended.
$III.$ Micturition.
$IV.$ $CNS$ passes on motor messages to initiate the contraction of the smooth muscles of the bladder and simultaneous relaxation of the urethral sphincter.
The correct order of steps for urination is:
$I.$ Stretch receptors on the wall of the urinary bladder send signals to the $CNS$.
$II.$ The bladder fills with urine and becomes distended.
$III.$ Micturition.
$IV.$ $CNS$ passes on motor messages to initiate the contraction of the smooth muscles of the bladder and simultaneous relaxation of the urethral sphincter.
The correct order of steps for urination is:
Medium
View SolutionThe process of expulsion of urine from the urinary bladder is called:
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