When air passes over the folds they vibrate and these vibrations are the sounds

When air passes over the folds they vibrate and these

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the process of producing the sounds. When air passes over the folds, they vibrate, and these vibrations are the sounds we produce and hear. The thickness of the vocal cords and the resonance area of the throat play major role in person’s voice. (2pts) Explain (in your own words) how gas exchange occurs in both internal and external respiration. 1. Internal Respiration: It is the process of exchange gases of oxygen and carbon dioxide between blood cells and tissue cells. This occurs in the metabolizing tissues, where oxygen diffuses out of the blood and carbon dioxide diffuses out of the cells. 2. External Respiration: It is the exchange of gases between the air in the lungs and the blood cells. This process of breathing external air containing oxygen where it diffuses into the blood and carbon dioxide diffuses from blood cells into the alveoli. 2 BIOL-216
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(2pts) Identify the primary differences in the way that oxygen and carbon dioxide are transported within the blood. 1. Oxygen Transportation: Oxygen is transported via two methods in the blood which are bound oxygen to hemoglobin and dissolved oxygen. Oxygen is transported through the blood cells, erythrocytes, which contain hemoglobin. The hemoglobin consists of four subunits and each subunit contains one atom of iron bound to one molecule of heme. Heme binds oxygen, and transports oxygen through the bloodstream. The other mechanism where oxygen is transported in blood stream is that when a small amount of oxygen is dissolved in plasma at physiological level of PO2. However, this process
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  • Spring '18
  • Kash Dutta

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