The Phylum named Chordata is the animal phylum with which everyone is most familiar with, since it consists of humans and other vertebrates (however, not all chordates are vertebrates). Some examples are: fishes, amphibians, reptiles, birds, mammals. Also, this phylum has three subphyla, which are Tunicata, Cephalochordata, Craniata. All the animals respire very similarly; although there are some differences, the Chordata still use many of the same body parts to breathe and exhale. They evolved similarly.
African Male Lion
The African Lion is a type of wildcat that can usually be found in certain places, like Africa (hence the name African lion). The lion breathes in oxygen and lets out carbon dioxide, which is creating energy for their cell growth, a necessity for life. The carbon dioxide gas has an affect on their pH systems, and the expiration of gases creates a need for lots of water. Lions have both an upper and lower respiratory tract. The upper respiratory tract is located right outside the chest, and the lower respiratory tract, which contains a few gas-exchanging pulmonary tissues, is located inside their chest cavity. The respiratory for lions is very similar to humans' respiratory system.
The way that us, Homo Sapiens, respire, is not very complicated like the way it is with other phylum that exist. When we breathe/respire, we inhale oxygen and later exhale carbon dioxide (opposite with plants). This exchange of gases is the respiratory system's way of getting oxygen to the blood in the body. The function of our mouth, nose, and nasal cavity is to warm and moisten the air that we take it. Right below the pharynx, the throat divides into the trachea and esophagus. There is also a small flap of cartilage called the epiglottis which prevents food from entering the trachea at all times. Also, the larynx helps protect the trachea. The trachea, also known as the windpipe, is the tube that carries air from the throat into the lungs. Also, things called alveoli have very thin walls which allow the exchange of Oxygen and Carbon Dioxide. There are about 3 million in each adult lung! The human respiratory system can be complicated to understand.
Frogs have three different types of respiration - Cutaneous (skin), Buccal (mouth), Pulmonary (lungs). In the Cutaneous respiration, there are gaseous exchanges between the skin of the frog and also the external environment (water and air). The skin of the frog is then supplied with the blood capillaries that it needs. Next is Buccal Respiration. When a frog floats on the surface of water or rests on land, they then respire through the buccal cavity. Atmospheric air is sucked in through the nasal openings, only when the floor of buccal cavity is lowered and opened. Lastly, is the Pulmonary Respiration. Pulmonary respiration can take account for 65% of total oxygen intake, for a frog. It includes many familiar parts, like larynx, trachea, a pair of lungs, etc.