MICTURITIONMICTURITION

MICTURITIONMICTURITION Micturition is the process by which urine is expelled from the bladder. The neural mechanism causing micturition is called Micturition reflex. Micturition cycle occurs two phases . it consist of a filling phase and emptying phase. Each phase requires a coordination interaction between the bladder and the nervous system. Neural mechanism causing micturition called MICTURATION REFLEX. Urine formed by the nephrone is ultimately carried to the urinary bladder. Where it is stored till a voluntary signal is given by the central nervous system [CNS]. This signal is initiated by the stretching of the urinary bladder as it gets filled with urine. In response ,the stretch receptors on the walls of the bladder send signals to the CNS. The CNS passes on motor messages to initiate the contraction of smooth muscles of the bladder and simultaneous relaxation of the urethral sphincter causing the release of urine. An adult human excretes , on average , 1 to 1.5 litres oof urine per day. The urine formed is a light yellow coloured watery fluid .Analysis of urine helps in clinical diagnosis many metabolic disorders as well as malfunctioning of the kidney. For Eg: Presence of glucose & ketone bodies in urine are indicative of diabetes mellitus. NORMAL MICTURITION PATH WAY 1.

MICTURITION

Micturition is  the process by which urine is expelled from the bladder.

The neural mechanism causing micturition is called Micturition reflex.

Micturition cycle occurs two phases .
 it consist of a filling phase and emptying phase.

Each phase requires a coordination interaction between the bladder and the nervous system.

Urine formed by the nephrone is ultimately carried to the urinary bladder.

Where it is stored till a voluntary signal is given by the central nervous system [CNS].

The signal is initiated by the stretching of the urinary bladder as it gets filled with urine.

In response ,the stretch receptors on the walls of the bladder send signals to the CNS.

The CNS passes on motor messages  to initiate the contraction of smooth muscles of the bladder .
The simultaneous relaxation of the urethral sphincter causing the release  of urine.
This type urine releasing process are called  MICTURITION

.

The urine formed is a light yellow coloured watery fluid .
The urine is a slightly acidic and has a characteristic odour.
An adult human excretes on average 1 to 1.5 litres of urine per day.
Analysis of  urine helps  in clinical diagnosis many metabolic disorders as well as malfunctioning of the kidney.

For Eg: Presence of glucose & ketone bodies in urine are indicative of diabetes mellitus.