What Makes Mammals So Complex?

Decent Essays
What makes mammals so complex? Is it the way that they breath? The way that they eat? The way that they reproduce? The way that they move? The thing that makes all mammals similar is that each and every one of them needs four systems that include the Circulatory, Reproductive, Respiratory, and Digestive, to perform their survival needs. In the following paragraphs, I will contrast to you samples of simple organisms that do not need complex systems, to that of mammals, which could not survive without systems of such complexity. One of the systems necessary for a mammal’s survival, that is not as necessary for those organisms of a lesser complexity, is the Respiratory system. For example, a Flatworm, otherwise known as the Platyhelminthes,…show more content…
While all mammals have digestive systems, there are more organisms that don’t need need quite complex systems to perform a similar task. The sea cucumber, being a simple organism, does not have a single digestive system, but a couple of parts that perform the task of digestion. For example, the sponge has pores on the outside of the majority of its body that are used as a mouth. Those pores, along with current canals, allow water in through their central opening, known as the osculum. The nutrients go through those currents, then to its cilia and stomach. Other body tools that the sponge uses in digestion include the choanocytes, that allow prey in, and the flagella, that makes a current to get the water into the mouth. Similar to the sea cucumber, the flatworm gets food in through its mouth. As the food enters, it goes through tubes to the gastrovascular cavity, while the food that hasn't been digested goes back out through the mouth. Being a simple organism, the flatworm, only has a few parts that include the mouth, the phalanx, and the intestines. Monkey’s being complex organisms, otherwise known as mammals, have a digestive system that includes a mouth, esophagus, stomach, small and large intestines, and a rectum. The mouth, which has salvia inside, breaks down the nutrients that were taken in, then the nutrients go through the esophagus, stomach, small intestines, and eventually to the gall bladder and large intestines, that take in the last nutrients of the food. Lastly, this complex process ends with the nutrients going into the rectum, and coming out of the body as feces. Mammals, being complex organisms, need more complex systems to intake and digest the necessary nutrients, then that of non mammalian
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