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Micturition

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If stretch receptors in wall of urinary bladder are destroyed (a) Micturition reflex occurs normally (b) Filling at bladder remains unaffected (c) Person has to undergo hemodialysis (d) Formation of one comes to a halt

Consider the following four statements (i).(iv) and select the option that correctly identifies the true (T) and false (F) ones. (i). Micturition is carried out by a reflex. (ii). ADH helps in water elimination making the urine hypotonic. (iii). Protein-free fluid is filtered from blood plasma into the bowman's capsule. (iv). Glucose is actively reabsorbed in the proximal convoluted tubule.

The outline of principal events of urination is given below in random manner. (i). Stretch receptors on the wall of 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 smooth muscles of bladder and simultaneous relaxation of urethral sphincter. The correct sequence of the event is

Consider the following statement each with two blanks. (i). Annelids have (1).____and insects have (2).____for excretion. (ii). Blood enters the glomerulus via (3)._____arteriole and leaves via (4).____arteriole (iii). During micturition the urinary bladder (5)._____ and the urethral sphincters (6).______ Which one of the following options correcty fills the blanks in any two of the above statements?