Question

In the given diagram label $A,B,C$ and $D$ and give the function of $B$ and $D$.

Answer 1

$\begin{array}{c}A=\text{Cornea}\\ B=\text{Ciliary muscles}\\ C=\text{Retina}\end{array}$
$D=$ Optic nerve Function of $B$ and $D$ are:
B : Ciliary muscles: It helps in holding the eye lens and changing or adjusting the focal length of the lens.
D: Optic nerve: It sends the electrical signal from retina to the brain.