Question

The movement of eyeball is brought about by the
A. Adductor muscle
B. Rectus muscle
C. Biceps
D. Peroneus

Answer 1

Hint: Eyeballs are circular structures that help in photoreception or image formation. These are located in the bony orbital. The main function is to detect images and convey the message to the brain (CNS).

Complete answer:
Adductor muscle: These are groups of five muscles which are located on different parts of the body. These help in the movement of the inner thigh and hip.
Rectus Muscles: these are involved in the rotation of the eye. About 4-6 pairs of muscles are involved. Medial and lateral carry the inward and outward movement of eyeball respectively. Superior and inferior carry the upward and downward movement of the eyeballs.
Biceps are two muscles of the arm that are located between the arm and the shoulder.
Peroneus muscles are present in the lower part of the leg. They play a major role in movement of the ankle joint and support of foot.

So, The movement of the eyeball is brought about by the rectus muscle. So the correct answer here is option B.

Note:
The eye consists of three main layers. These layers lie flat against each other and form the eyeball. The outer can be seen as a tough, white, opaque membrane called the sclera (the white of the eye). The slight bulge in the sclera at the front of the eye is a clear, thin, dome-shaped tissue called the cornea.