Urination will be caused by simultaneous:
1. contraction of smooth muscle of bladder and relaxation of urethral sphincter
2. relaxation of smooth muscle of bladder and contraction of urethral sphincter
3. contraction of smooth muscle of bladder and urethral sphincter
4. relaxation of smooth muscle of bladder and urethral sphincter

Subtopic:  Micturition Reflex |
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The presence of which of the following in urine would be abnormal?

1. sodium 2. glucose
3. urea 4. creatinine

Subtopic:  Micturition Reflex | Disorders of Excretory System |
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Given below is a diagram showing the functioning of the micturition reflex in humans. Identify the correct statements:
 
I: The region designated as ‘X’ in the diagram is the sacral region of the spinal cord.
II: Motor signals from the spinal cord lead to relaxation of the muscle in the wall of the urinary bladder and constriction of the urinary sphincter.
1. Only I 2. Only II
3. Both I and II 4. Neither I nor II
Subtopic:  Micturition Reflex |

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