构成脂的结构单元分子 脂防酸、甘油和胆碱 Fatty acyl chains Glycerol Phosphocholine Phosphate Mi-o-c, Alcohol (choline】 Hydrophobic tail CHa me-oo-ct.ct,at Hydrophilic head Phosphatidylcholine 构成脂的结构单元分子 脂肪酸、甘油和胆碱