  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.
Constipation is an abnormal condition that is recognized by the body's inability to expel food that has been digested. In horses, the term âimpactedâ is used to describe constipation. The inability to defecate may be due to an underlying medical condition that requires treatment, but may also be related to stress or poor diet. Large amounts of digesta become impacted most commonly in the large colon of the horse.