According to HowStuffWorks, nitrogen is important to humans and all other living organisms because it is an important component of amino acids. Humans use amino acids to build proteins that form the building blocks of many biological tissues.Continue Reading
While nitrogen is an important component of amino acids, most organisms on Earth, including humans, are unable to use free nitrogen. Instead, HowStuffWorks explains that the nitrogen must become “fixed,” meaning that it must first bond with another element. Bacteria and blue-green algae complete most nitrogen fixation in terrestrial and marine ecosystems. Plants then draw these nitrogen-laden compounds from the soil and use them to build their own proteins. When humans or other animals eat these plants, they derive their own nitrogen. When plants and animals die and begin the process of decaying, much of the nitrogen locked in their bodies is released into the atmosphere where it is absorbed by other organisms.
Fortunately, HowStuffWorks explains that nitrogen is plentiful on Earth. When not bound to other elements, nitrogen forms a colorless, tasteless, odorless gas. Nitrogen is the most abundant element in the atmosphere, representing nearly 78 percent of the atmospheric volume and 75 percent of the atmospheric weight. It is required by all living things to live and grow.Learn more about Human Anatomy
A positive nitrogen balance means that a person's nitrogen intake exceeds the amount of nitrogen being excreted from the body. This is the body's natural anabolic state, and it means that the body is fully recovered and ready to build muscle.Full Answer >
Dictionary.com states that "thorax" indicates the part of the torso in humans or in higher vertebrates that is situated between the abdomen and the neck. The thorax, or chest, includes the cavity where the lungs and heart are located. The ribs, sternum and some vertebrae that surround the cavity.Full Answer >
According to Melodie Anne Coffman for The Nest, cats and humans share many anatomical similarities within the lungs, heart, digestive system, urinary tract and sex organs. Cats also share very basic elements of anatomy with humans, including eyes, mouths, ears, noses, bones, tongues, teeth and skin.Full Answer >
The normal maximum mouth opening (MMO) is approximately 48 millimeters for humans. The ability to position three fingers of either the left or the right hand in the mouth between the upper and the lower front teeth indicates normal size of the mouth.Full Answer >