Lateral rectus muscle

Lateral rectus muscle

Assessment

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Health Sciences, Biology

University - Vocational training

Hard

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This tutorial covers the lateral rectus muscle, one of the six extraocular muscles responsible for eye movement. It originates from the common tendinous ring and inserts onto the anterolateral surface of the eye. Its primary function is to abduct the eye, moving it laterally away from the nose. The muscle is innervated by the abducens nerve and receives blood supply from the anterior ciliary arteries, branches of the ophthalmic artery.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is NOT a function of the extraocular muscles?

Supporting the eyeball

Protecting the eyeball

Facilitating eye abduction

Controlling eye movements

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Where does the lateral rectus muscle originate?

From the lateral aspect of the eyeball

From the superior rectus muscle

From the common tendinous ring

From the optic nerve

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary function of the lateral rectus muscle?

To move the eye outward

To move the eye inward

To move the eye downward

To move the eye upward

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which cranial nerve is responsible for the innervation of the lateral rectus muscle?

The optic nerve

The oculomotor nerve

The abducens nerve

The trochlear nerve

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The lateral rectus muscle receives blood supply from which artery?

The lacrimal artery

The posterior ciliary artery

The anterior ciliary artery

The central retinal artery