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biology 0610printed 196 · PDF 196
328 pagesrevision 46933
printed 196 · PDF 196
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Aitchison College Academic Resources.
Fig. 2.1 shows a section through the eye with a ray of light passing through it and four
muscles labelled A, B, C and D.
light
Fig. 2.1
(a) Complete the table.
part name of muscle effact of contraction
allows the lens to become fatter for
focusing on close objects
Allows pupil to become smaller and
B iris circular muscle
for less light to enter the eye.
[2]
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