  Sexual reproduction in fungi usually involves two different mating types. Because gametes of both mating types are about the same size, they are not called male and fema â¦ le.Rather, one mating type is called + (plus) and the other â (minus).ecause gametes of both mating types are about the same size, they are not called male and fema â¦ le. Rather, one mating type is called + (plus) and the other â (minus).
Defecation is normally assisted by taking a deep breath and trying to expel this air against a closed glottis (Valsalva maneuver). This contraction of expiratory chest muscles, diaphragm, abdominal wall muscles, and pelvic diaphragm exerts pressure on the digestive tract.
Consequently, the feces become dry and hard. Defecation (emptying the bowels) can become very painful, and in some serious cases there may be symptoms of bowel obstruction. When the constipation is very severe; when the constipation prevents the passage of feces and gas, it is called obstipation.