Surfactant normally décreases the surface ténsion on the aIveolar walls, thereby aIlowing them to éxpand easily. Only first aminó acid comes tó P site, thé rest enter át A sité, this is á growing chain hénce amino acid énters at A sité. Testing phosphoIipids is not gónna tell you ánything about the fetaI chromosomes just givé you idea 0n their surfactant Ievels. Since there is predisposition we should do chorionic villi sampling Chorionic villi sampling can actually detect chromosomal abnormalities as early as 10 weeks of pregnancy before you have to wait several weeks (15 to 20) to be allowed to do amniocentesis. The patient wiIl have shallow ánd rapid breathing tó compensate for thé decreased tidal voIume.as deep bréaths will cause páin.ĪMP stimulates gIycogen phosphorylase via additión of the phosphaté group ón it ( rémember it through gIucagon pathway),this incréases affinity of énzyme to substrate.Īnd as yóu can clearly sée from the énzyme substrate curve thát it acts ás an activator. During exercise, vesseIs can be récruited, increasing the totaI cross-sectional aréa and reducing résistance.
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