Anatomy | The Extrinsic Eye Muscles [Functions & Innervation]

Anatomy | The Extrinsic Eye Muscles [Functions & Innervation]

Assessment

Interactive Video

Science, Health Sciences, Biology

University

Hard

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The video tutorial provides an in-depth look at the extrinsic eye muscles, which are six voluntary skeletal muscles responsible for eye movement. It explains the distinction between rectus and oblique muscles, their functions, and how they are controlled by cranial nerves. The tutorial also covers how to differentiate between the left and right eye using these muscles and discusses the specific roles of cranial nerves in controlling eye movement.

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7 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the extrinsic eye muscles primarily responsible for?

Focusing on distant objects

Rotating the eye in its socket

Producing tears

Blinking the eyes

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can you determine if an eye is left or right using the oblique muscles?

By the direction the oblique muscles run

By the color of the iris

By the size of the pupil

By the shape of the eyelid

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which muscle is responsible for moving the eye medially?

Lateral rectus muscle

Superior oblique muscle

Medial rectus muscle

Inferior oblique muscle

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary function of the lateral rectus muscle?

To move the eye medially

To move the eye upwards

To move the eye laterally

To move the eye downwards

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which muscle elevates the eye and turns it laterally?

Lateral rectus muscle

Inferior oblique muscle

Medial rectus muscle

Superior rectus muscle

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which cranial nerve controls the superior oblique muscle?

Cranial nerve 3

Cranial nerve 4

Cranial nerve 5

Cranial nerve 6

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of nerves are the cranial nerves controlling the extrinsic eye muscles?

Autonomic nerves

Mixed nerves

Motor nerves

Sensory nerves