INFERIOR RECTUS MUSCLE Meaning and
Definition
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The inferior rectus muscle is one of the six extraocular muscles that control the movement of the eye. It is located in the eye socket and is responsible for the downward movement of the eyeball when the eye is in a primary position (looking straight ahead). The muscle originates from a tendinous ring called the annulus of Zinn, which surrounds the optic nerve at the back of the eye socket.
The inferior rectus muscle is innervated by the inferior division of the oculomotor nerve, specifically the inferior branch or nerve fibers. This innervation allows the muscle to receive signals from the brain to contract, leading to the downward rotation of the eye. Conversely, relaxation of the inferior rectus muscle allows the eye to move upward.
While the primary function of the inferior rectus muscle is to move the eye downward, it also contributes to other movements of the eye, including intorsion (inward rotation) and adduction (inward movement towards the nose). By working together with the other extraocular muscles, the inferior rectus muscle helps to coordinate the complex movements that allow for binocular vision and depth perception.
In summary, the inferior rectus muscle is a vital component of the eye's muscular system, responsible for downward movement and assisting in other eye movements. Its innervation by the oculomotor nerve enables precise control over the position and movement of the eye.
Common Misspellings for INFERIOR RECTUS MUSCLE
- unferior rectus muscle
- jnferior rectus muscle
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- inderior rectus muscle
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- inverior rectus muscle
- ingerior rectus muscle
- interior rectus muscle
- inrerior rectus muscle
- infwrior rectus muscle
- infsrior rectus muscle
- infdrior rectus muscle
