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.
The sciatic nerve arises from the sacral plexus from the roots of L4-S3 and runs through the buttock and down the lower limb.It is the longest and widest single nerve in the body.1  origin: sacral plexus (L4-S3).he sciatic nerve arises from the sacral plexus from the roots of L4-S3 and runs through the buttock and down the lower limb.