The skeletal and respiratory systems are two important systems in the human body. The skeletal system consists of bones and cartilages that form the framework of the body and provide support, protection, movement, and storage. It includes the axial and appendicular skeleton. The respiratory system uses oxygen and releases carbon dioxide through breathing and respiration. It includes the nose, throat, lungs, and diaphragm. The respiratory system takes in oxygen, which is used to produce energy in cells, and releases carbon dioxide as a waste product. Diseases like asthma, emphysema, bronchitis and pneumonia can affect the respiratory system.