BIOL 153 Lecture Notes - Cornea, Southwest Ohio Regional Transit Authority, Ciliary Body
Document Summary
Notes continued write into book notes at later time. Cornea is part of the focusing mechanism. When light rays go through it they get bent. The speed of light is constant (sorta true). The speed of light is not always constant, it depends what the light is going through. When light is going through vaccum that is when is going at its fastest speed. When it goes through something clear, solid it goes slower. When light goes through high density medium to low density = we see the bending of light. By contracting the radial muscles of the ciliary body that pulls on the lens and flattens the lens. The curvature is decreased therefore the light rays are bent less. In the fovea we have the highest density of photoreceptors (mostly cons aka stuff sensitive to colours) Around the edges of the cell there is mostly rods aka black and white stuff. Know digram 16. 25 from notes (only first part)
