BIO271H1 Lecture Notes - Lecture 6: Buccal Pumping, Agnatha, Fick'S Laws Of Diffusion

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8 Mar 2016
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More advanced organisms use the circulatory to deliver bulk flow to the different tissues in the body (if you live in water) if in air, the o2 has to dissolve first before it can enter the circulatory system. Law of bulk flow: flow = change in pressure/resistance. Decreasing resistance or increase radius to move faster: bronchoconstriction/bronchodilation, flow = (change in pressure(pi)(radius)4/8(length)(viscosity) Detailed version of law of bulk flow. 78 % of the air is composed of nitrogen. Pressure x volume = number of moles x r x temperature. Solubility is also affected by temperature and ionic concentration concentration, the solubility increases. It is bottle under pressure where a lot is dissolved in the fluid, but it comes out as solution. Gases diffuses at different rates in water an air. Boyle"s law: the gases are going to move from areas of high pressure to that of low pressure, changes in pressure are inversely related to changes in volume of the pressure.

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