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.
Food enters the alimentary canal through the mouth or oral cavity. The functions of the oral cavity include analysis, mechanical processing, digestion and lubrication. The anatomy of the mouth includes the following features: Lips-protect the anterior opening of the mouth.he alimentary canal The Poo Machine (GI tract) is a continuous tube that winds and twists through the ventral body cavity. It is about 9 m (30 ft) in a cadaver but somewhat shorter in a living person. The organs that form the alimentary canal include: