Difference between a human digestive system and a rat digestive system
A human digestive system vs a rat digestive system:
Human and rats are both mammals who bear certain similarities between their digestive systems because of which one sees rats being utilized for many a lab experiment nowadays. Yet, the human digestive system and the rat digestive system have certain distinct features with regards to several main aspects which will be further explored by this article.
What is the human digestive system?
A human does not need a specialized kind of food in order to maintain his life and therefore, human beings do not have a specialized digestive system which concentrates on digesting specialized types of food. Human beings are omnivorous and therefore, they have a simple and a basic digestive tract with accessory glands which help its function. The human digestive system starts at the mouth which breaks down the food that one eats, which also consists of the tongue, teeth and the salivary glands which help break down the food in to molecules. The three main parts of the digestive system which helps in the absorption, and elimination other than the digestion of food can be listed down as the oesophagus, stomach, small intestine which also consists of the large intestine and the anus. The gall bladder ensures the digestion of animal fats that human beings consume whereas breaking down of cellulose is not supported by this system.
What is the rat digestive system?
The rat digestive system is a specialized system which concentrates particularly on the digestion of cellulose. This is because of the fact that rats eat seed mostly, even though they are known to nibble at other rougher elements as well from time to time. A rat’s digestive system is therefore well equipped to digest long polysaccharides and this sort of digestion is done by fermentation. Rats posses an enlarged large intestine with microorganisms and yet, they do not possess a gall bladder. A rat’s digestive tract too starts with the mouth which contains the teeth, the tongue and the salivary glands which produces enzymes which help break down the food that they consume.
What are the differences between a human digestive system and a rat’s digestive system
First and foremost, human beings being omnivorous creatures, do not have a specialized digestive system specially equipped to digest certain types of food. And yet, as rats are predominantly known as seed eaters, their digestive systems are equipped with a special chamber and an enlarged large intestine which is specially designed to digest cellulose from the seeds. Therefore, the two digestive systems vary by their specific intentions which set them apart.
Furthermore, whereas the human digestive system has a gall bladder which produces bile which helps the digestion of animal fatty acids consumed by humans, the rat’s digestive system does not have such a feature as they are not known to be particularly carnivorous. Therefore, they are more apt to nibble throughout the day instead of taking large portions of food all at once which will not be supported by their digestive systems because of the absence of a gall bladder. Rats do not also have the specific gene which triggers fullness and then, communicate the message to the brain. Therefore, rats are known to eat themselves to their deaths occasionally because of this reason.