Circular muscles around the lens are called __________.

iris

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ciliary muscles

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optic nerves

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pupil

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Solution

The correct option is B
ciliary muscles

Circular muscles around the lens are called ciliary muscles. The contraction and relaxation of these muscles alter the curvature of the lens. This helps in focusing light.

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Similar questions

(a) Draw a labelled diagram of the human eye. Label the following parts on this diagram: Cornea, Iris, Pupil, Ciliary muscles, Eye-lens, Retina, Optic nerve and Blind spot.

(b) What are the functions of the following parts of the eye?

(i) Iris (ii) Eye-lens (iii) Ciliary muscles (iv) Retina (v) Optic nerve

The change in converging power of an eye-lens is caused by the action of:

(a) iris

(b) ciliary muscles

(d) retina

What is the function of the following -

a - pupil

b- cornea

c- retina

d- iris

e - eye lids

d- optic nerve

d- siliary muscles

Q. Study the following and identify the incorrect statements
(i) Muscles of iris and ciliary body are smooth muscles of mesodermal origin
(ii) Slow and sustained involuntary contraction of smooth muscles are called spasms
(iii) Quiescent mononucleate myogenic cells of skeletal muscles are called pericytes
(iv) Skeletal muscles fibre is multinucleate and is a syncytium

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Circular muscles around the lens are called __________.

The correct option is B ciliary muscles Circular muscles around the lens are called ciliary muscles. The contraction and relaxation of these muscles alter the curvature of the lens. This helps in focusing light.

The correct option is B
ciliary muscles

Circular muscles around the lens are called ciliary muscles. The contraction and relaxation of these muscles alter the curvature of the lens. This helps in focusing light.