Anatomy Quiz on Eye/Orbit and Ear

Which bone forms the roof of the bony orbit?

• Frontal bone

• Maxilla

• Ethmoid

• Zygomatic

• Supraorbital ridge

What structure passes through the optic canal?

• Optic nerve

• Facial nerve

• Trochlear nerve

• Maxillary artery

• Lacrimal fossa

The lateral wall of the orbit is formed by which bones?

• Palatine and vomer

• Zygomatic and whitnall tubercle

• Frontal and nasal

• Maxilla and ethmoid

• Retinal artery

Which extraocular muscle is innervated by the trochlear nerve?

• Superior oblique

• Inferior oblique

• Medial rectus

• Lateral rectus

• Circular ligament

Which structure drains tears into the nasal cavity?

• Conjunctiva

• Nasolacrimal duct

• Lacrimal canaliculi

• Lacrimal sac

• Crista galli

What is the action of the superior rectus muscle?

• Depression and adduction

• Depression and abduction

• Elevation and abduction

• Elevation and adduction

• Auricular cartilage

Which structure supplies parasympathetic innervation to the eye?

• Optic nerve

• Abducent nerve

• Trochlear nerve

• Oculomotor nerve

• Vestibular fold

What is the role of the levator palpebrae superioris?

• Depresses eyeball

• Abducts the eye

• Elevates upper eyelid

• Constricts pupil

• Cochlear ganglion

The superior orbital fissure transmits which of the following?

• Accessory nerve

• Maxillary nerve

• Facial nerve

• Oculomotor nerve

• Otic capsule

Which muscle causes intorsion of the eye?

• Inferior oblique

• Medial rectus

• Superior oblique

• Lateral rectus

• Semilunar canal