Question

urology unit check in
describe the structures of the bladder and urethra.

1. the length of the urethra is the same for males and females.
2. micturition, voiding, and urination are synonyms.
3. humans have control over the micturition reflex.
4. in both males and females, urine exits the urinary meatus.
5. there are two urethral sphincters.
6. the presence of 100ml or urine in the bladder triggers the urge to void.

Explanation:

1. Male urethras (~20cm) are far longer than female urethras (~4cm).
2. All three terms refer to the act of urinating.
3. Adult humans can voluntarily override the micturition reflex; infants cannot.
4. The urinary meatus is the external opening where urine exits the body in both sexes.
5. There is an internal involuntary urethral sphincter and an external voluntary urethral sphincter.
6. The urge to void typically triggers when bladder volume reaches 200-400mL, not 100mL.

Answer:

1. False
2. True
3. True (voluntary control in adults)
4. True
5. True
6. False