the disk in the fundus of the eye marking the point at which the optic nerve enters; it is accompanied by blood vessels, is oval, light in color and the blind spot of the retina.
ARTERIOLES. In arterioles, the tunica intima consists of a continuous endothelium and a very thin subendothelial layer. In addition, a thin, fenestrated internal elastic lamina is present in larger arterioles but absent in terminal arterioles. Generally, the tunica media consists of 2 layers of smooth muscle cells.
Endomysium is the word used to refer to the fine sheath of connective tissue layer of reticular fibers that surrounds (covers) each single muscle fibre. This layer includes includes blood vessels (capillaries), nerves and lymphatics.