Help please. There's this guy at my school who is seen as one of the popular guys ( I don't really care about that but I’m kind of that person that is sort of friends with everyone but don’t get asked to hang out) but I really like him and I don't know if he likes me back or if he just has a flirty personality. He also talks and jokes with other girls sometimes but it seems like he makes an effort to touch me often. I don't see him do that with anyone else. (Lots of fist bumps lol) there was even one time he even made me dap him up then covered our hands with his other hand for a few seconds IN CLASS WITH OTHER PEOPLE LOOKING. Ug I don't know. He also talks to me more seriously when we're alone and not as flirty as when other people are around but still makes me smile and my heart races. but there are other times when it seems like he could care less and never really talks to me outside of that class and we don't snap eachother or anything. He also will be doing school work and randomly get up to talk to me or high five or something lol. Sorry this is so long I'm just so confused (I'm in high school btw)

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!

Which statement best illustrates that problem solving can create new medical devices? robert hooke was in charge of verifying the information that was sent to the royal academy. william harvey did experiments with apes to learn about the circulatory system. the stethoscope was invented because the physician did not want to put his head on women's chests to listen to their heart and lungs. anton van leeuwenhoek was a very curious man and looked at just about everything under this microscope.

Brian is admitted to the hospital after a motor vehicle crash. during his stay at the hospital, physical therapists him with his recovery. this is care?