  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.
Jump to Section. Difficult defecation (dyschezia) and blood in stool (hematochezia) are caused by rectal, anal, colon, or intestinal disease. There are many individual causes of each type of dyschezia or hematochezia, Dyschezia alone can be caused by a variety of illnesses and conditions from constipation to cancer.