What muscle moves the eye laterally?
lateral rectus
The lateral rectus moves the eye horizontally laterally (abduction). The medial rectus muscle moves the eye horizontally medially (adduction). The superior oblique muscle incyclotorts the eye, and the inferior oblique muscle excyclotorts the eye.
Which muscle of the eye depresses the eye and turns it laterally?
inferior oblique
The superior oblique muscle rotates the eye medially and abducts it when the eye if facing forward while the inferior oblique rotates the eye laterally and adducts it. When the eye is adducted, or turned toward the nose, the superior oblique depresses the eye while the inferior oblique elevates the eye.
What moves the eyeball?
EXTRAOCULAR MUSCLES: These muscles originate in the eye socket (orbit) and work to move the eye up, down, side to side, and rotate the eye. The superior rectus is an extraocular muscle that attaches to the top of the eye. It moves the eye upward.
What muscle rotates the eyeball around the anteroposterior axis outward?
the superior oblique muscle
The primary (main) action of the superior oblique muscle is intorsion (internal rotation), the secondary action is depression (primarily in the adducted position) and the tertiary action is abduction (lateral rotation). The extraocular muscles rotate the eyeball around vertical, horizontal and antero-posterior axes.
Which muscle rotates the eyeball medially quizlet?
The inferior rectus muscle depresses the eye and medially rotates it.
How does the lateral rectus move the eye?
The lateral rectus muscle is responsible for lateral movement of the eyeball, specifically abduction. Abduction describes the movement of the eye away from the midline (i.a. nose), allowing the eyeball to move horizontally in the lateral direction, bringing the pupil away from the midline of the body.
What does lateral rectus muscle do?
Which of the following muscles moves the eyeball superiorly and laterally?
The lateral rectus is an extraocular muscle that attaches to the side of the eye near the temple. It moves the eye outward. The superior oblique is an extraocular muscle that comes from the back of the orbit.
Which extrinsic eye muscle moves the eyeball laterally and superiorly?
The superior oblique is an extraocular muscle that comes from the back of the orbit and attaches to the posterior, superior, lateral surface eye. This muscle threads through a pulley-like piece of cartilage known as the trochlea.
Which extrinsic eye muscle elevates the eye and moves it laterally?
Lateral rectus muscle This muscle is what allows the eye to move outward. Movement for the lateral rectus muscle is made possible by the abducens nerve.
Which muscle moves the eye superiorly?
superior rectus
The superior rectus is an extraocular muscle that attaches to the top of the eye. It moves the eye upward.
Which of the following extrinsic eye muscles moves the eye laterally?
Lateral Rectus
Lateral Rectus This extraocular muscle helps move the pupil away from the body’s midline. It’s also responsible for the horizontal movement, similar to the medial rectus muscle.
What muscle elevates the eyeball?
the superior rectus muscle
The first of these muscles, the superior rectus muscle, elevates the eye, allowing the eye to look up. The antagonist of the superior rectus muscle is the inferior rectus muscle, which depresses the eye, allowing the eye to look down.
How many muscles control the movement of the eyeball?
– Attachments : Originates from the inferior part of the common tendinous ring, and attaches to the inferior and anterior aspect of the sclera. – Actions : Main movement is depression. Also contributes to adduction and lateral rotation of the eyeball. – Innervation : Oculomotor nerve (CN III).
What muscle rotates the eyeball?
Superior rectus muscle – elevates the eye while looking straight ahead (primary position)
How can I strengthen my eye muscles?
Trouble focusing your eyes to read
Which muscle is not associated with a movement of the eyeball?
9 = (D) Geinoglossus muscle not associated with movement of eye ball. The genioglossus muscle is one of the muscles in the mouth associated with the movement of tongue. It is a fan-shaped extrinsic tongue muscle that originates within the median plane of the tongue and attaches to the oral surface of the mandible.