There is one opening that serves as both mouth and anus
Not sure what you mean by '3 types of digestion', but there are three major food groups (carbohydrates, proteins, and fats), and each has a different method of digestion by the digestive system.
Digestion
The digestion system is about 6.5meters long in an average adult male.
Ingestion, digestion, absorption, and elimination.
visceral functions such as: Heart rate Blood pressure Digestion Urination
Digestion is controlled by the parasympathetic division of the autonomic nervous system.
They are the Lysosomes.
all animals have digestion systems to digest there food
small intestines
it sends broken down food to the stomach for digestion
digestion and waste disposal
Digestion.