The contents of the superior orbital fissure that do not pass through the tendinous ring are:

1. Lacrimal nerve: This nerve is a branch of the ophthalmic nerve that provides sensory innervation to the lacrimal gland, upper eyelid, and conjunctiva.

2. Frontal nerve: This is the largest branch of the ophthalmic nerve. It travels through the superior orbital fissure outside of the tendinous ring and gives off the supraorbital and supratrochlear nerves.

3. Trochlear nerve (CN IV): This is a motor nerve that innervates the superior oblique muscle of the eye.

4. Superior ophthalmic vein: This vein drains the superior aspect of the eye and its associated structures. It passes through the superior orbital fissure to drain into the cavernous sinus.

5. Branches of the ophthalmic artery: These branches supply blood to the structures of the orbit, eyelids, and nose.

6. Nerve to the superior oblique (from the oculomotor nerve, CN III): This nerve innervates the superior oblique muscle, which helps to move the eye downward and laterally.

7. Meningeal branches of the ophthalmic nerve: These branches re-enter the skull via the superior orbital fissure to supply the dura mater in the anterior cranial fossa.

Question

The contents of the superior orbital fissure that do not pass through the tendinous ring are:

1. Lacrimal nerve: This nerve is a branch of the ophthalmic nerve that provides sensory innervation to the lacrimal gland, upper eyelid, and conjunctiva.

2. Frontal nerve: This is the largest branch of the ophthalmic nerve. It travels through the superior orbital fissure outside of the tendinous ring and gives off the supraorbital and supratrochlear nerves.

3. Trochlear nerve (CN IV): This is a motor nerve that innervates the superior oblique muscle of the eye.

4. Superior ophthalmic vein: This vein drains the superior aspect of the eye and its associated structures. It passes through the superior orbital fissure to drain into the cavernous sinus.

5. Branches of the ophthalmic artery: These branches supply blood to the structures of the orbit, eyelids, and nose.

6. Nerve to the superior oblique (from the oculomotor nerve, CN III): This nerve innervates the superior oblique muscle, which helps to move the eye downward and laterally.

7. Meningeal branches of the ophthalmic nerve: These branches re-enter the skull via the superior orbital fissure to supply the dura mater in the anterior cranial fossa.

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