The dissections showed that the fascia lata (FL) attaches to the entire extent of the inferior aspect of the iliac crest. In the upper and lateral thigh, the FL receives fibrous contributions from the gluteus maximus and tensor fascia lata (TFL) to form the ITB.
Tunica media. This is the middle layer. It is made of smooth muscle and elastic fibers. It is responsible for vasodialation and vasoconstriction of the blood vessels. It is also the target tissue for Vasopressin (ADH) Hormone and plays into blood pressure. Tunica adventitia This is the most superficial of the layers.
Vasoconstrictor drugs produce contraction of muscle cells in the walls of blood vessels.A very high level of alcohol in the bloodstream has a vasoconstrictor effect, as it shrinks the blood vessels and increases blood pressure.A vasoconstrictor drug, agent, or nerve causes vasoconstriction of the walls of blood vessels.