We have the outer membrane region as well as the inner membrane region. And the entire structure of our cell membrane is called the phosphol lipid bilayer. So two layers of phosphol lipids are arranged in the following manner. So, the outer membrane region has the hydrophobic heads pointing towards the surroundings and the hydrophobic tails pointing inwards. The inner membrane, this section here, has the hydrophobic tails pointing away from the polar cytosol and the hydrophilic heads pointing towards that polar cytosol. So this is our arrangement here.