Housekeeping employees of the medical center were recruited for a federally funded study of blood pressure, blood count levels, infectious disease history, and job stress. The interviews and blood tests were conducted in a private location not affiliated with the study center. Follow-up interviews were conducted in the same location. The study coordinator stopped at the cafeteria on her way back to the study office after the second study visit for the last three study subjects and lost the three file folders. Records of one subject indicated he had a history of a sexually transmitted disease and another had recently been treated for tuberculosis. The subjects were notified of the loss. Following this event, the IRB approved a protocol change requiring that all records be transmitted electronically to the study office using the medical center’s secure network. Which of the follwoing should be reason:(a)-this is an unanticipated problem and not an adverse event.(b)-this is an anticipated problem and not an adverse event.(c)- this is an unanticipated problem and an adverse event.(d)- none of these

Which of the following identifies the main culprit for america’s increasing weight gain?

What are some misrepresentation of the human body?

The primary function of the respiratory system is to supply the blood with oxygen in order for the blood to deliver oxygen to all parts of the body. the respiratory system does this through breathing. when we breathe, we inhale oxygen and exhale carbon dioxide. this exchange of gases is the respiratory system's means of getting oxygen to the blood. respiration is achieved through the mouth, nose, trachea, lungs, and diaphragm. oxygen enters the respiratory system through the mouth and the nose. the oxygen then passes through the larynx (where speech sounds are produced) and the trachea which is a tube that enters the chest cavity. in the chest cavity, the trachea splits into two smaller tubes called the bronchi. each bronchus then divides again forming the bronchial tubes. the bronchial tubes lead directly into the lungs where they divide into many smaller tubes which connect to tiny sacs called alveoli. the average adult's lungs contain about 600 million of these spongy, air-filled sacs that are surrounded by capillaries. the inhaled oxygen passes into the alveoli and then diffuses through the capillaries into the arterial blood. meanwhile, the waste-rich blood from the veins releases its carbon dioxide into the alveoli. the carbon dioxide follows the same path out of the lungs when you exhale. the diaphragm's job is to pump the carbon dioxide out of the lungs and pull the oxygen into the lungs. the diaphragm is a sheet of muscles that lies across the bottom of the chest cavity. as the diaphragm contracts and relaxes, breathing takes place. when the diaphragm contracts, oxygen is pulled into the lungs. when the diaphragm relaxes, carbon dioxide is pumped out of the lungs. write one paragraph (at least 6 sentences) describing the path of oxygen through the respiratory system. also include why this "order of operations" is the way it is!