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10 Cards in this Set

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What is the word that this process describes?
- passive, spontaneous, no energy required passage of small molecules into or out of an area according to a concentration gradient
diffusion
What is convective flow and where in the eye may it occur?
flow of a fluid in response to a heat change - occurs in anterior chamber - this type of flow can eliminate "unstirred effects" - also eliminates waste - if you do not want equilibrium in the fluid then should be separated by endothelium or epithelium
Both osmotic and oncotic pressure promote the movement of ______ toward the _______ conc of solute/protein
water, higher
What is the fx of oral glycerin? Which clinical scenario may you need to administer?
causes a rapid increase in osmotic pressure in the BS - draws water out of tissues (Including vitreous). May need in closed angle glauc - as water is removed from vitreous, IOP decreases
ciliary body stroma and aqueous humor contain a HUGE difference in conc of plasma protein. what is responsible for this?
tight junctions
epithelial polarity and domains maintained by
tight juxa
Name two important properties in the eye that arise because of the Na-K-ATPase pump
corneal transparency maintenance
aqueous production
what is a uniporte?
used in facilotated diff - integral membrane protein - transfers one solute molecule at a time with a solute gradient
Beta 1 and 2 receptors do what to aqueous prod?
increase
Movement of ions from the pigmented ciliary epithelium to the non pigmented ciliary epithelium occurs through what mech?
gap jx