Welcome to this lesson titled digestive system overview. Today you will be taking a look at some of the basic structures and functions associated with the digestive system. Specifically, you will learn about:
The digestive system, if you were to break it down as easily as possible, you could say is like one large tube that has two openings. One where food enters and the other opening is where the waste exits, and in between those openings is where food is digested and nutrients are absorbed.
There are actually five main functions of the digestive system.
The mouth is the site where food enters our body into the digestive system. Within the mouth food is mechanically and chemically broken down; then you will swallow it.
Food will then move towards the pharynx, which is also known as your throat, and then from there will move to the esophagus. The esophagus is the tube that connects your mouth and your pharynx to your stomach. Peristalsis are the wavelike motions that will help push food down the esophagus towards your stomach and the rest of your digestive system.
The stomach is the site where food is mechanically and chemically broken down in. Mechanical and chemical breakdown occurred in the mouth and then will be more extensive in the stomach. There are different enzymes and gastric juices that are chemically digesting food.
From there the food will travel into the small intestine which is the location where most of the nutrients from the food that you eat is absorbed. After the small intestine, food will then move into the large intestine where any remaining nutrients and water are absorbed.
From there, once nutrients and water and everything that needs to be absorbed have been absorbed, waste will exit out the end of the large intestine (the anus).
So this lesson has been an overview on the structure and function of the digestive system. Specifically you looked at the five main functions and the path of the digestive system.
Keep up the learning and have a great day!
Source: THIS WORK IS ADAPTED FROM SOPHIA AUTHOR AMANDA SODERLIND
A body system involved in digesting and absorbing foods.
A tube that carries food from the pharynx to the stomach.
A tube attached to the small intestine where remaining nutrients and water are absorbed before waste is passed.
The location where food enters and digestion begins.
Also known as the throat. Food moves from the mouth to the pharynx as a person begins to swallow.
A long tube in which food passes through as nutrients are absorbed.
The area where food is stored as well as chemically and mechanically digested before moving into the small intestine.