When you menstruate, your body sheds the lining of the uterus (womb). Menstrual blood flows from the uterus through the small opening in the cervix and passes out of the body through the vagina (see how the menstrual cycle works below). Most menstrual periods last from 3 to 5 days.
The structure of the human alimentary canalThe alimentary canal is a long hollow tube which runs from the mouth to the anus .Together with several other organs, including the liver and the pancreas, it makes up the digestive system. The total length of the human alimentary canal is between 5 and 6 m, from anus to mouth.he serosa is a very thin layer, made up of connective tissue covered with a single layer of thin, smooth closely fitting cells. en833i2424lnnq We can observe in detail each part of the human alimentary canal structure in this diagram. The mouth: Taking food into the mouth is called ingestion.
# 52 Human alimentary canal. The alimentary canal is a long tube which runs from the mouth to the anus. It is part of the digestive system. The digestive system also includes the liver and the pancreas.Main regions of the alimentary canal and associated organs are: 1  Mouth, salivary glands. 2  Oesophagus. 3  Stomach. 4  Pancreas, liver, gall bladder. 5  Small intestine (duodenum + ileum). 6  Large intestine (colon +rectum). 7  Anus.he digestive system also includes the liver and the pancreas. Main regions of the alimentary canal and associated organs are: 1  Mouth, salivary glands. 2  Oesophagus. 3  Stomach. 4  Pancreas, liver, gall bladder. 5  Small intestine (duodenum + ileum). 6  Large intestine (colon +rectum). 7  Anus.