21. Other complications from surgery can include urinary incontinence, stress incontinence, a urethrovaginal fistula, or recurrent diverticula . 22. As the animals mature, diverticula arise on the tubes of these organs, which develop either spermatozoa or ova. 23. Feigenbaum F1, Henderson FC . Giant sacral meningeal diverticula : surgical implications of the " thecal tip " sign. 24. The genitals of the female are unusual in that the vagina is ridged and two large diverticula protrude from the vulval vestibule. 25. This study compared the etiology of right-sided diverticula in Japan with that of left-sided diverticula in the West. 26. This study compared the etiology of right-sided diverticula in Japan with that of left-sided diverticula in the West. 27. Experiments show that a brachiopod's oxygen consumption drops if petroleum jelly is smeared on the shell, clogging the diverticula . 28. Incidence ( detection ) rates of colon diverticula have rapidly increased in Japan since World War II with the increased dietary fiber intake. 29. The midgut contains a ventriculus with a valve, a variable number of blind diverticula ( caeca ), and a rectal tube. 30. Diverticula are small pouches that form in the lining of the digestive system, generally in the lower part of the large intestine.