Question

१।
१५३१११२ । ५।२६ । । ।
२. जर ।।
Write the structure of eye lens and state the role of ciliary muscles
in the human eye.
भाग-१
SECTION-C
नस्ल एवं क्षारक की पहचान कीजिए जिनसे सोडियम हाइड्रोजन कोनट बनत
।
है। अपने उपर के समर्थन में रासायनिक समीकरण लिखिए। उलेत कीजि किया
वह यौगिक अतीय अथवा क्षारीय अथवा उदासीन है। इसका pH मान भी लिखा।
Identify the acid and base which form sodium hydrogen carbonate.
Write chemical equation in support of your answer. State whether
this compound is acidic, basic or neutral. Also write its pH value.​

Answer 1

Answer:

Explanation:The lens is a transparent, biconvex structure in the eye that, along with the cornea, helps to refract light to be focused on the retina. The lens, by changing shape, functions to change the focal distance of the eye so that it can focus on objects at various distances, thus allowing a sharp real image of the object of interest to be formed on the retina. This adjustment of the lens is known as accommodation. Accommodation is similar to the focusing of a photographic camera via movement of its lenses. The lens is more flat on its anterior side than on its posterior side.

Ciliary muscle: A circular muscle that relaxes or tightens the zonules to enable the lens to change shape for focusing. The zonules are fibers that hold the lens suspended in position and enable it to change shape during accommodation.