And remember, sweat is another method by which we excrete our waste products to the outside. Sweat is also the method by which we regulate the amount of heat found inside our body. So when we basically want to take the heat and move it to the outside we do it via the process of sweating as we'll see in the next lecture. Now, we also have smooth muscle in our dermis and the smooth muscle is found around the roots of the hair follicles and that's because this smooth muscle is responsible for erecting our hair giving us goosebumps. So once again the reticular layer is the lower portion of the dermis it is much thicker than the papillary layer and consists of a highly dense connective tissue made of collagen and elastin fibers these fibers give the skin its strength and elasticity. Now the reticular portion also contains blood vessels, sebaceous glands, sweat glands the root of the hair follicles receptors such as for example pressure receptors as well as smooth muscle.