The following Topics and Sub-Topics are covered in this chapter and are available on MSVgo:
Well, you know that every creature must eat to live. That is irrespective of all living beings. The food that you eat is not dependent on its taste, however. Instead, it should contain a few essential elements too. For example, you need to eat a certain amount of proteins, carbohydrates, and fats to remain healthy and function efficiently. The elements are known as nutrients, and understanding how nutrients affect the body is known as nutrition in animals. The plants follow a different method for ingesting food and deriving nutrition. in plants
Different animals eat differently with their food habits depending entirely on their body structure and the kind of work they engage in. You have no doubt heard about birds sucking honey from flowers with bigger animals and birds eating the food directly. The type of feeding habit has evolved over the years and changed with the functioning of the body. You may have heard about a python swallowing its prey whole. The fish and frogs have adapted to their environment too. They get their food from the water. They swim near food particles floating on water and gulp them down to get nutrition.
You may now want to know about how you get enough nutrition. Think of your body structure. A well-formed digestive system of the human body consists of several organs and glands. The digestive tract begins at the mouth and ends at the anus, the last part of the tract that expels out the waste products after digestion. The entire digestive tract passes through the esophagus or food pipe into the stomach and then through the small intestine, large intestine, and rectum, ultimately ending at the anal opening. Major organs such as the liver, pancreas, and gallbladder play an essential role in the digestion of food.
You need to learn more about the system and how digestion ensures the nutrition of the body. Some of the primary areas involved with digestion and nutrition directly consist of:
Buccal Cavity (Mouth)
Open your mouth wide and trace the tongue.
An adult has 32 permanent teeth, with the wisdom teeth developing later in life. Remember that several bacteria act directly on the remnants of food particles left in your mouth. The sugar in them is broken down, and acids release now into your mouth. Do not avoid washing your mouth thoroughly after eating. Failing to do so will cause your teeth to decay, and you will suffer from toothache.
Oesophagus (Food Pipe)
The food you swallow passes through the long tube known as the esophagus. You may call it the food pipe.
This is one of the organs believed to be the most essential for nutrition in animals.
Partially digested food enters the small intestine from the stomach. This is a 7.5 meters long organ that looks like a spiral structure.
This is the next part of the digestive tract that looks similar to the small intestine but is much shorter.
The last part of the digestive system is known as the anus. It removes waste products from the human body after digestion of food.
Grass-eating animals, known as herbivores, digest food differently. You will find animals such as cows and sheep chewing continuously as they graze on grass. This occurs due to the following:
You cannot avoid learning about the process of digestion in amoeba, the unicellular animal when learning all about nutrition in animals.
In short, this will give you a fair idea about the human digestive system. However, you may have to refer to the human digestive system diagram to understand various organs’ processes and location more specifically.
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