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.
Video Transcript. The sciatic nerve is the longest and largest nerve in the human body, running from the lower back through the back of the leg, and down to the toes. The sciatic nerve starts as a collection of nerve fibers in the lower spine.ideo Transcript. The sciatic nerve is the longest and largest nerve in the human body, running from the lower back through the back of the leg, and down to the toes. The sciatic nerve starts as a collection of nerve fibers in the lower spine.