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.
What are cilia and what they do? They are thin bits that stick out of cells. (for an idea of their shape, cilia is latin for eyelashes) In humans cilia are in the windpipe and they sweep muck out of the lun â¦ gs.