Ingestion. 1  The first function of the digestive system is ingestion, or the intake of food. The mouth is responsible for this function, as it is the orifice through which all food enters the body. The mouth and stomach are also responsible for the storage of food as it is waiting to be digested.
Cancer is a leading cause of death around the world and its incidence continues to rise. Each year 12.7 million people discover they have cancer and 7.6 million people die from the disease.However, evidence shows that 30 - 40 percent of these deaths can be prevented, and one-third can be cured through early diagnosis and treatment.ancer is a leading cause of death around the world and its incidence continues to rise. Each year 12.7 million people discover they have cancer and 7.6 million people die from the disease.
At least 12.6 million people are diagnosed with cancer around the world every year, and more than 7.5 million die of the disease â a toll that is steadily rising in every country as the population expands and people live longer, according to research by the World Health Organisation.e have poured billions upon billions of dollars into cancer research, and yet cancer rates continue to explode. Cancer is the leading cause of death worldwide, and according to the World Health Organization the number of cancer deaths globally is expected to nearly double over the next 20 years.