What is role strain in sociology? A: Role strain in sociology is when a particular role a person needs to fulfill is strained due to excessive obligations or multiple demands on time, energy or available resources.
Short posterior ciliary arteries: Branch from the ophthalmic artery and pierce the sclera at the edge of the optic nerve; they supply the choroid and the rods and cones of the retina. Long posterior ciliary arteries: Branch from the ophthalmic artery and pierce the sclera to supply the ciliary body and iris.
In the duodenum, digestive juices (secretions) are added that further process the food into usable energy for the body. These secretions come via the biliary tree. The biliary tree is a system of vessels that directs these secretions from the liver, gallbladder and pancreas through a series of ducts into the duodenum. The exit hole into the duodenum is called the papilla of Vater.