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- We inhale oxygen when we breathe and exhale carbon dioxide. What is the oxygen used for and where does the carbon dioxide come from?The two lungs of human are not identical size. Why?Illustrate the flow of oxygen in our breathing system through a diagram. (You may usearrows to indicate the flow). What do you think will happen if one part of your breathing system failsto carry out its function properly?
- The hemoglobin in mammalian blood is usually thought ofsimply as increasing the amount of O2 that can be carried by eachliter of blood. However, in a lecture on hemoglobin, a respiratoryphysiologist made the following statement: “The presence ofhemoglobin in the blood also makes possible the rapid uptakeof O2 by the blood as it flows through the lungs.” Explain thelecturer’s point.The amount of time that scuba divers can spend underwater is lim-ited by several factors, including time required to deplete the air sup-ply in their tanks. To make their air last longer, novice divers may be instructed to breathe slowly and exhale as much as possible on each breath. Can you suggest a reason why this behavior would lengthen a diver’s air supply?Which component of the larynx is composed of elastic cartilage? O Thyroid cartilage O Epiglottis O Vocal fold O Arytenoid cartilage O Cricoid cartilage Question 6 Which of the following statements about structures of the larynx is true? Vocal folds are stretched between the arytenoid and thyroid cartilage O Vocal folds are made up of collagen fibers O The thyroid cartilage is composed of elastic cartilage Shorter vocal folds are characteristic of a deeper voice O Laryngitis is caused by inflammation of the epiglottis
- When we think of breathing, we seem to only think about inhaling and exhaling air in and out of our lungs. What else is there to the whole process of breathing? Describe that which is neede to maintain homeostasis by the lungs.Explain why the gas values from the alveolar air to the blood change during pulmonary gas exchange. For example: Alveolar air for CO2 has a value of 40mmHg then when entering the blood shifts to 45mmHg. Why does this occur? I tried to calculate this by using Dalton’s law but I’m not Understanding.Which Of the followings are TRUE? Select one: O a. Cellular respiration - Gas exchange between blood and tissue cells b. Pulmonary ventilation – Conducting zone O c. Respiratory zones Site of gas exchange O d. Internal respiration - CO2 is used by the cells O e. External respiration - Continuous replacement of gases in alveoli One of the following are not correct ?
- Explain in your own words why the oxygen cascade is presentedas a cascade of partial pressures.You cannot affect the oxygen delivery to your tissues by drinking “oxygenated water.” However, breathing oxygen at hyperbaric pressures does increase oxygen delivery to the tissues. Explain whythese two statements are true.Describe the relationship of breathing and respiration. Are they the same? Justify your answer.
