The glycerol and phosphate group together constitute the polar and hydrophilic (or head) region of the molecule whereas the fatty acids make up the nonpolar and hydrophobic (or tail) region.
Glycerol d phosphate taqqalan daɣ edag iyan qutbi d hydrophilic ( meɣ eɣaf) n molecule tan as ijja awen acid tan r-artayan daɣ edag war n imos n qutbi d hydrophobic