what is the path that air takes to and from the lungs?
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Nose/Mouth then Pharynx, Trachea, Bronchus, Alveoli,and then reverse for exhalation. 10 marks please, yippee ki yay!
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Respiratory and circulatory.\n\nRespiratory brings oxygen into your body.  Circulatory pumps blood, which carries the oxygen, to the cells in the rest of your body.
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Your lungs contain almost 1500 miles of airways and over 300 million alveoli. \nEvery minute you breathe in 13 pints of air.
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Air is 80% N2 and about 20% O2\nFigure out how much air the lungs hold\nThen convert the volume to molecules\nFind out how much air is in the world and convert that to molecules\nThen figure out the ratio
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Diffusion of gas occurs through the one cell layer thick aveoli in the lungs. The speed of diffusion is dependent on different factors, one being the surface area and second the size of the diffusing particles. In the lungs there is ample surface and Oxygen and Co2 are small particles so the rate of diffusion is great. Hemoglobin has a high affinity for O2 in the lungs and a low affinity for CO2. In the tissues the role reverses and hemoglobin has a low affinity for O2 and a greater affinity for CO2. Now in the tissues since they are small molecules O2 and CO2 readily diffuse across the cell membranes and require no special transport mechanisms. This is simple diffusion where gasses are diffusing down their concentration gradient.
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always in your arm. Blood travels first to your arm from your lungs. Blood is oxygenated in your lungs. Therefore there is more pressure in blood near your lungs. The first places after lungs have hte most pressure. Then slowly it decreases. The legs get teh least pressure. When blood goes across capellaries and hte O2 is used up and the pressure is very low. It is lowest in veins since all oxygen has been used up. It is also lowest far away from the heart because the heart increases pressure.
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Lungs. Same as humans and most land mammals.
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Arteries\n\nThere are two major kinds of blood vessels, veins and arteries. arteries run from the heart to all the other body parts, and the heart pumps fresh blood into the arteries. All the cells in the body draw nourishment and oxygen from this blood and leave out waste and carbon dioxide. The veins then carry this impure blood back to the heart. The blood that goes to the lungs brings back extra oxygen and the liver and the small intestine play a major role in introducing nourishment into the blood stream
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i think the course is as following:\n                                                   room air-nose-trachea-bronchi-bhronciole-terminal bronciole-alveoli-blood
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breathing is just lungs.  respiration has to do with the blood getting oxygen.\n\nand there are 2 types of respiration too.  one with chemistry.  not sure about that one.
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Breathing, the process whereby an organism (living thing) obtains oxygen from its surroundings, to take part in internal chemical reactions which break down food to release energy. Breathing also usually gives out waste carbon dioxide as an unwanted by-product of these reactions. Breathing is one aspect of respiration, which is a term that includes both physically obtaining oxygen, and also using it in chemical pathways inside cells to release energy—the process of cellular respiration\n\nMany aquatic animals obtain oxygen dissolved in the water by muscle-powered movements, such as when the forward motion of a fish or the pumping actions of its mouth and throat force a flow of water over its gills ( See also Fish). This is underwater breathing. Tiny organisms “breathe” by the process of passive seepage or diffusion of oxygen through their body surfaces. Plants also obtain oxygen by diffusion from the air or water around them, usually into the leaves.
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into mouth or lungs, through pharynx, into bronchioles and then bronchioli, then into each lung to a sac of alveoli, then onto hemoglobin molecules in blood cells, then to the heart to be pumped to the body and given to a body cell.
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Oxygen breathed into the lungs diffuses into the alveoli, and then passes through into the  capillary walls. Here it turns into oxyhaemoglobin. Carbon dioxide is carried by blood into the alveoli and is breathed out of the lungs.\n\nGases diffuse along pressure gradients. In other words, gases spread from high concentration areas to low-concentration areas.\n\nThe blood in the capillaries arriving at the alveoli is low in oxygen and high in carbon dioxide. Air in the alveoli is high in oxygen and low in carbon dioxide. \n\nTherefore oxygen diffuses into the blood (attaching itself to the haemoglobin), and carbon dioxide diffuses into the alveoli, where it is breathed out.\n\nThe reverse process occurs at the capillaries that surround the muscle fibres
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Basically by osmosis. The cell absorbs nutrients and oxygen through the cell wall from the blood circulating in the capillaries. The oxygen is absorbed by the body in an exchange in the lungs and nutrients are absorbed through the small and large intestine and they all travel in the blood stream to the cells.
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the prefix pulmo- refers to lungs. so the pulmonary circulation involves blood circulation from the heart to the lungs and back.
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The organs of respiration consist of the RESPIRATORY PASSAGE and the LUNGS.\n>External nostrils\n>Internal nostrils or nasal cavity\n>Pharynx or throat\n>Larynx or voice box\n>Trachea or wind pipe\n>Bronchi(plural) & Bronchus(singular)\n>Bronchioles\n>Alveoli or air sac
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Respiration is performed using tracheae, air-filled tubes which open at the surfaces of the thorax and abdomen through pairs of spiracles. The spiracle valves only open to allow oxygen and carbon dioxide exchange. The tracheoles, found at the end of the tracheal tubes, are insinuated between cells and carry oxygen throughout the body. \n\nI hope this helps.