Digestion in Human Beings 3D CBSE Class 7 Science (www.iDaaLearning.com)

http://www.idaalearning.com/
Human beings take food through mouth and digest it in specific organs for digestion. The undigested food is defecated.
The food we take passes through a specific canal which begins with buccal cavity and ends at the anus. This canal is called alimentary canal or the digestive tract.