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In the cell membrane, hydrophilic heads orient to the inside and outside of the membrane, with the hydrophobic molecules inside. This gives the membrane its semi permeable fluid nature.he hydrophilic region in the cell is water-loving and it  attracts the water molecules. It is basically composed of polar  groups which readily dissolve and absorb water.
describe the location and the function of the bulbourethral gland. near a dilated bulb at the inner end of the penis; during sexual arousement produce a clear slippery fluid that lubricates the head of the penis. protects the sperm by neutralizing the acidity of the residual urine in the urethra.ear a dilated bulb at the inner end of the penis; during sexual arousement produce a clear slippery fluid that lubricates the head of the penis. protects the sperm by neutralizing the acidity of the residual urine in the urethra.