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Questions and Answers
Which cranial nerve supplies the superior oblique muscle?
Which cranial nerve supplies the superior oblique muscle?
Which cranial nerve supplies the lateral rectus muscle?
Which cranial nerve supplies the lateral rectus muscle?
Which cranial nerve is responsible for the movement of the eyelid?
Which cranial nerve is responsible for the movement of the eyelid?
Which cranial nerve is responsible for the secretion of lacrimal fluid?
Which cranial nerve is responsible for the secretion of lacrimal fluid?
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Which division of the trigeminal nerve exits the cranium through the superior orbital fissure?
Which division of the trigeminal nerve exits the cranium through the superior orbital fissure?
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Which division of the trigeminal nerve exits the cranium through the foramen rotundum?
Which division of the trigeminal nerve exits the cranium through the foramen rotundum?
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Which division of the trigeminal nerve exits the cranium through the foramen ovale?
Which division of the trigeminal nerve exits the cranium through the foramen ovale?
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Which nerve supplies sensory innervation to the lacrimal gland, conjunctiva, and upper eyelid?
Which nerve supplies sensory innervation to the lacrimal gland, conjunctiva, and upper eyelid?
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Which nerve supplies sensory innervation to the eye, bridge of nose, and mucous membranes of the paranasal sinuses?
Which nerve supplies sensory innervation to the eye, bridge of nose, and mucous membranes of the paranasal sinuses?
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Which nerve supplies sensory innervation to the upper eyelid, conjunctiva, forehead, and scalp?
Which nerve supplies sensory innervation to the upper eyelid, conjunctiva, forehead, and scalp?
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Which paranasal sinus is most likely to become infected?
Which paranasal sinus is most likely to become infected?
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What is the primary function of the nose?
What is the primary function of the nose?
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Which nerve supplies the olfactory receptors in the nasal cavity?
Which nerve supplies the olfactory receptors in the nasal cavity?
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Which bone is not part of the orbit?
Which bone is not part of the orbit?
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Which chamber of the eye contains the largest amount of fluid?
Which chamber of the eye contains the largest amount of fluid?
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Which nerve carries visual impulses from the retina to the brain?
Which nerve carries visual impulses from the retina to the brain?
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Which gland, when swollen, can impact the optic nerve and cause disturbances in vision?
Which gland, when swollen, can impact the optic nerve and cause disturbances in vision?
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Which cranial nerve supplies the superior oblique muscle of the eye?
Which cranial nerve supplies the superior oblique muscle of the eye?
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Which cranial nerve supplies the muscles that move the eye in all directions except superior oblique and lateral rectus?
Which cranial nerve supplies the muscles that move the eye in all directions except superior oblique and lateral rectus?
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Which nerve supplies the lateral rectus muscle of the eye?
Which nerve supplies the lateral rectus muscle of the eye?
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Which bone of the skull is the attachment point for the upper row of teeth?
Which bone of the skull is the attachment point for the upper row of teeth?
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The basilar artery bifurcates into which branches of the cerebral arterial circle?
The basilar artery bifurcates into which branches of the cerebral arterial circle?
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Which bone of the skull is the attachment point for the lower row of teeth?
Which bone of the skull is the attachment point for the lower row of teeth?
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Which artery bifurcates into branches of the cerebral arterial circle?
Which artery bifurcates into branches of the cerebral arterial circle?
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Which cranial nerve is responsible for the movement of the tongue?
Which cranial nerve is responsible for the movement of the tongue?
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Which division of the trigeminal nerve supplies sensory innervation to the lower jaw and lower teeth?
Which division of the trigeminal nerve supplies sensory innervation to the lower jaw and lower teeth?
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Which bone is responsible for increasing the surface area of the nasal cavity?
Which bone is responsible for increasing the surface area of the nasal cavity?
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Which nerve is responsible for the sense of smell?
Which nerve is responsible for the sense of smell?
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From where does the olfactory nerve arise?
From where does the olfactory nerve arise?
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Which cranial nerves arise directly from the cerebrum?
Which cranial nerves arise directly from the cerebrum?
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Which cranial nerve is responsible for the movement of the extra ocular muscles?
Which cranial nerve is responsible for the movement of the extra ocular muscles?
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What is the primary function of the sinuses?
What is the primary function of the sinuses?
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Which chamber of the eye is full of aqueous fluid?
Which chamber of the eye is full of aqueous fluid?
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What condition is caused by a build-up of pressure in the vitreous chamber of the eye?
What condition is caused by a build-up of pressure in the vitreous chamber of the eye?
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Which sinus is most likely to become infected?
Which sinus is most likely to become infected?
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Which nerve supplies sensory innervation to the eye, bridge of nose, and mucous membranes of the paranasal sinuses?
Which nerve supplies sensory innervation to the eye, bridge of nose, and mucous membranes of the paranasal sinuses?
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Where does the information from the retina of the eye get processed?
Where does the information from the retina of the eye get processed?
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Which bone is not part of the orbit?
Which bone is not part of the orbit?
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What is the main function of the posterior cerebral arteries within the cerebral arterial circle?
What is the main function of the posterior cerebral arteries within the cerebral arterial circle?
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Which arteries are bifurcating within the cerebral arterial circle?
Which arteries are bifurcating within the cerebral arterial circle?
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What is the main function of the nose?
What is the main function of the nose?
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Which nerves supply sensory innervation to the external nose?
Which nerves supply sensory innervation to the external nose?
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Which part of the eye is responsible for flipping the visual input the right way around?
Which part of the eye is responsible for flipping the visual input the right way around?
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Which structure in the eye allows us to perceive depth and calculate distance?
Which structure in the eye allows us to perceive depth and calculate distance?
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What happens when there is a lesion in the optic chiasm?
What happens when there is a lesion in the optic chiasm?
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What is the function of the optic nerve?
What is the function of the optic nerve?
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Which gland, when swollen, can cause disturbances in visual fields?
Which gland, when swollen, can cause disturbances in visual fields?
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Where does the pituitary gland sit in the skull?
Where does the pituitary gland sit in the skull?
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What happens if the pituitary gland swells or increases in size?
What happens if the pituitary gland swells or increases in size?
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Which cranial nerve supplies sensory innervation to the upper eyelid, conjunctiva, forehead, and scalp?
Which cranial nerve supplies sensory innervation to the upper eyelid, conjunctiva, forehead, and scalp?
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What is the primary function of the pituitary gland?
What is the primary function of the pituitary gland?
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Which bone of the skull forms a protective enclosure for the pituitary gland?
Which bone of the skull forms a protective enclosure for the pituitary gland?
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Study Notes
Anatomy of the Nasal Cavity and Orbit
- The nasal cavity has the primary function of filtering dust entering the respiratory system.
- The blood supply to the nasal cavity comes from branches of the ophthalmic and maxillary arteries, and the facial vein.
- The nerve supply to the nasal cavity includes the olfactory nerve (CN I), the ophthalmic nerve (V1), and the maxillary nerve (V2).
- The nasal cavity is comprised of bones and cartilage, with three projections on the lateral wall: superior conchae, middle conchae, and inferior conchae.
- Olfaction is fulfilled by the olfactory nerve, which arises from the cerebrum and exits via the cribriform plate.
- Paranasal sinuses are air-filled extensions of the nasal cavity that can produce mucus and drain into the nasal cavity through various ducts.
- The orbit is composed of seven bones and houses the eye.
- The eye is divided into three chambers: anterior, posterior, and vitreous chamber.
- Visual information received by the retina is carried through the optic nerve (CN II), and the crossing of visual fields between the eyes is important for binocular vision.
- The extraocular muscles are responsible for the movements of the eye, which occur around three axes: vertical, transverse, and anteroposterior.
- The oculomotor nerve (CN III) supplies most of the extraocular muscles, while the trochlear nerve (CN IV) supplies the superior oblique muscle, and the abducens nerve (CN VI) supplies the lateral rectus muscle.
- The lacrimal gland secretes lacrimal fluid, which lubricates, protects, and provides nutrients for the eye. It receives sensory and autonomic innervation.
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Test your knowledge of the nasal cavity and orbit with this quiz. Learn about the functions and anatomy of these important structures while solving a riddle. Join now at slido.com #3242461.
