Humans and Tails :: Anatomy Persuasive Argumentative Essays

Humans and Tails When field of operationing the anatomy of domain in biology textbooks, many authors marvel over the complexity of the humanity body. Attributes much(prenominal) as our opposable thumbs, bipedal mobility, and cognitive abilities are extolled however, existence are at a serious disadvantage. We lack major appendages that would instigate in daily living they could greatly improve quality of life. integrity such appendage is a furrow understandably, some humans exhaust grown accustomed to their current mode of living and would shy outdoor(a) from any change despite its advantages. For this reason, the tail that I am virtually to depict is prosthetic, allowing for attachment and removal when desired. A tail would give a human numerous advantages, as long as it is constructed in such a way to allow for several functions. With the proper appendage on the distal end, it could perform as a third arm, a makeshift seat, or simply an aesthetic addition. All of these functions will be explained in further detail later. In order to create a tail that is as dexterous as possible, it may be useful to study the tails of several different animals and reptiles to determine what the best structure would be. umteen primates have prehensile, or grasping, tails. These are comprised of articulated linkages they cannot rotate in all directions, preventing potential flexibility. Flexor and extensor sinews act as twain the driving motor of the tail, and attached bones serve as a support system. Another tail character is similar to an elephants bole no bone is involved in the structure. Movement is achieved through muscle contraction, and a sheath that is similar to the composition of a tendon prevents shrinkage in the overall tail. Sharks demonstrate a third tail type that is very preposterous in structure, allowing for exceptional front. Muscles are arranged virtually the vertebrae in a conical formation and are attached by three-dim ensional tendons. Contraction of these muscles creates a motion that is fluid, and the tail is capable of movement in all directions. In 1994, Kevin C. Zippel, a student zoologist at Cornell University made a surprising discovery. While studying in Papua spick-and-span Guinea, specifically on the island of Bougainville, he found that a remarkable lounge lizard known as the Solomon Island skink somehow evolved a very unique tail.