Examlex
Potassium crystallizes in a body-centered cubic unit cell.If the length of an edge of the unit cell is 524 pm,what is the atomic radius (in pm) of a potassium atom?
Blind Spot
The point in the visual field that corresponds to the lack of light-detecting photoreceptor cells on the optic disc of the retina where the optic nerve passes through.
Macula Lutea
A small, yellowish central area of the retina that is rich in cones and mediates clear detailed vision.
Tarsal Plate
A thick, fibrous layer of connective tissue that forms the supporting structure for the eyelid.
Levator Palpebrae Superioris
A muscle in the orbit that elevates the upper eyelid.
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