SYSTEM

Trigeminal nerve anatomy test

Evaluate your knowledge of trigeminal nerve anatomy. The test covers the topography of branches, exit points from the skull, innervation zones, and parasympathetic connections.

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1. Where is the trigeminal ganglion (Gasserian ganglion) located?

In the pterygopalatine fossa

The trigeminal ganglion is located in the trigeminal cave (cavum trigeminale) on the anterior surface of the temporal bone.
In the infratemporal fossa

The trigeminal ganglion is located in the trigeminal cave (cavum trigeminale) on the anterior surface of the temporal bone.
On the anterior surface of the temporal bone in the trigeminal impression

The trigeminal ganglion is located in the trigeminal cave (cavum trigeminale) on the anterior surface of the temporal bone.
On the posterior surface of the temporal bone

The trigeminal ganglion is located in the trigeminal cave (cavum trigeminale) on the anterior surface of the temporal bone.
I find it difficult to answer

The trigeminal ganglion is located in the trigeminal cave (cavum trigeminale) on the anterior surface of the temporal bone.

2. Through which foramen does the ophthalmic nerve (the first branch of the trigeminal nerve) exit the cranial cavity?

Foramen rotundum

The ophthalmic nerve (n. ophthalmicus) exits the cranial cavity into the orbit through the superior orbital fissure (fissura orbitalis superior).
Foramen ovale

The ophthalmic nerve (n. ophthalmicus) exits the cranial cavity into the orbit through the superior orbital fissure (fissura orbitalis superior).
Foramen spinosum

The ophthalmic nerve (n. ophthalmicus) exits the cranial cavity into the orbit through the superior orbital fissure (fissura orbitalis superior).
Superior orbital fissure

The ophthalmic nerve (n. ophthalmicus) exits the cranial cavity into the orbit through the superior orbital fissure (fissura orbitalis superior).
I find it difficult to answer

The ophthalmic nerve (n. ophthalmicus) exits the cranial cavity into the orbit through the superior orbital fissure (fissura orbitalis superior).

3. Which foramen serves as the exit for the maxillary nerve (the second branch) from the cranial cavity?

Foramen rotundum

The maxillary nerve (n. maxillaris) exits the cranial cavity through the foramen rotundum, passing into the pterygopalatine fossa.
Foramen lacerum

The maxillary nerve (n. maxillaris) exits the cranial cavity through the foramen rotundum, passing into the pterygopalatine fossa.
Superior orbital fissure

The maxillary nerve (n. maxillaris) exits the cranial cavity through the foramen rotundum, passing into the pterygopalatine fossa.
Foramen ovale

The maxillary nerve (n. maxillaris) exits the cranial cavity through the foramen rotundum, passing into the pterygopalatine fossa.
I find it difficult to answer

The maxillary nerve (n. maxillaris) exits the cranial cavity through the foramen rotundum, passing into the pterygopalatine fossa.

4. The mandibular nerve (the third branch of the trigeminal nerve) exits the cranial cavity through:

Foramen rotundum

The mandibular nerve (n. mandibularis) exits the skull through the foramen ovale, entering the infratemporal fossa.
Foramen ovale

The mandibular nerve (n. mandibularis) exits the skull through the foramen ovale, entering the infratemporal fossa.
Foramen spinosum

The mandibular nerve (n. mandibularis) exits the skull through the foramen ovale, entering the infratemporal fossa.
Jugular foramen

The mandibular nerve (n. mandibularis) exits the skull through the foramen ovale, entering the infratemporal fossa.
I find it difficult to answer

The mandibular nerve (n. mandibularis) exits the skull through the foramen ovale, entering the infratemporal fossa.

5. Which branch of the ophthalmic nerve provides sensory innervation to the cornea?

Frontal nerve

The nasociliary nerve (n. nasociliaris) gives off long ciliary nerves, which innervate the cornea, sclera, and choroid of the eye.
Lacrimal nerve

The nasociliary nerve (n. nasociliaris) gives off long ciliary nerves, which innervate the cornea, sclera, and choroid of the eye.
Nasociliary nerve

The nasociliary nerve (n. nasociliaris) gives off long ciliary nerves, which innervate the cornea, sclera, and choroid of the eye.
Zygomatic nerve

The nasociliary nerve (n. nasociliaris) gives off long ciliary nerves, which innervate the cornea, sclera, and choroid of the eye.
I find it difficult to answer

The nasociliary nerve (n. nasociliaris) gives off long ciliary nerves, which innervate the cornea, sclera, and choroid of the eye.

6. Which of the following muscles is NOT innervated by the motor branches of the mandibular nerve?

Masseter muscle

The buccinator muscle (m. buccinator) is a facial muscle innervated by the facial nerve, while the buccal nerve from the V3 system provides only sensory innervation to the mucosa of the cheek.
Buccinator

The buccinator muscle (m. buccinator) is a facial muscle innervated by the facial nerve, while the buccal nerve from the V3 system provides only sensory innervation to the mucosa of the cheek.
Temporalis muscle

The buccinator muscle (m. buccinator) is a facial muscle innervated by the facial nerve, while the buccal nerve from the V3 system provides only sensory innervation to the mucosa of the cheek.
Lateral pterygoid muscle

The buccinator muscle (m. buccinator) is a facial muscle innervated by the facial nerve, while the buccal nerve from the V3 system provides only sensory innervation to the mucosa of the cheek.
I find it difficult to answer

The buccinator muscle (m. buccinator) is a facial muscle innervated by the facial nerve, while the buccal nerve from the V3 system provides only sensory innervation to the mucosa of the cheek.

7. The infraorbital nerve is a direct continuation of:

Ophthalmic nerve

The infraorbital nerve (n. infraorbitalis) is the terminal branch of the maxillary nerve (V2), passing through the inferior orbital fissure into the infraorbital canal.
Mandibular nerve

The infraorbital nerve (n. infraorbitalis) is the terminal branch of the maxillary nerve (V2), passing through the inferior orbital fissure into the infraorbital canal.
Maxillary nerve

The infraorbital nerve (n. infraorbitalis) is the terminal branch of the maxillary nerve (V2), passing through the inferior orbital fissure into the infraorbital canal.
Facial nerve

The infraorbital nerve (n. infraorbitalis) is the terminal branch of the maxillary nerve (V2), passing through the inferior orbital fissure into the infraorbital canal.
I find it difficult to answer

The infraorbital nerve (n. infraorbitalis) is the terminal branch of the maxillary nerve (V2), passing through the inferior orbital fissure into the infraorbital canal.

8. Which nerve encircles the middle meningeal artery with its two roots?

Auriculotemporal nerve

The auriculotemporal nerve (n. auriculotemporalis), a branch of V3, begins with two roots that encircle the middle meningeal artery before joining into a single trunk.
Lingual nerve

The auriculotemporal nerve (n. auriculotemporalis), a branch of V3, begins with two roots that encircle the middle meningeal artery before joining into a single trunk.
Inferior alveolar nerve

The auriculotemporal nerve (n. auriculotemporalis), a branch of V3, begins with two roots that encircle the middle meningeal artery before joining into a single trunk.
Buccal nerve

The auriculotemporal nerve (n. auriculotemporalis), a branch of V3, begins with two roots that encircle the middle meningeal artery before joining into a single trunk.
I find it difficult to answer

The auriculotemporal nerve (n. auriculotemporalis), a branch of V3, begins with two roots that encircle the middle meningeal artery before joining into a single trunk.

9. Which branch arises from the inferior alveolar nerve before it enters the mandibular canal?

Mental nerve

The mylohyoid nerve (n. mylohyoideus) arises from the inferior alveolar nerve before its entry into the mandibular foramen and contains motor fibers.
Lingual nerve

The mylohyoid nerve (n. mylohyoideus) arises from the inferior alveolar nerve before its entry into the mandibular foramen and contains motor fibers.
Mylohyoid nerve

The mylohyoid nerve (n. mylohyoideus) arises from the inferior alveolar nerve before its entry into the mandibular foramen and contains motor fibers.
Masseteric nerve

The mylohyoid nerve (n. mylohyoideus) arises from the inferior alveolar nerve before its entry into the mandibular foramen and contains motor fibers.
I find it difficult to answer

The mylohyoid nerve (n. mylohyoideus) arises from the inferior alveolar nerve before its entry into the mandibular foramen and contains motor fibers.

10. General sensory innervation of the anterior 2/3 of the tongue (general sensation) is provided by:

Glossopharyngeal nerve.

The lingual nerve (n. lingualis), a branch of the mandibular nerve, provides general sensory innervation to the mucosa of the anterior 2/3 of the tongue.
Chorda tympani

The lingual nerve (n. lingualis), a branch of the mandibular nerve, provides general sensory innervation to the mucosa of the anterior 2/3 of the tongue.
Hypoglossal nerve

The lingual nerve (n. lingualis), a branch of the mandibular nerve, provides general sensory innervation to the mucosa of the anterior 2/3 of the tongue.
Lingual nerve

The lingual nerve (n. lingualis), a branch of the mandibular nerve, provides general sensory innervation to the mucosa of the anterior 2/3 of the tongue.
I find it difficult to answer

The lingual nerve (n. lingualis), a branch of the mandibular nerve, provides general sensory innervation to the mucosa of the anterior 2/3 of the tongue.

11. The zygomatic nerve (n. zygomaticus) arises from:

Ophthalmic nerve

The zygomatic nerve is a branch of the maxillary nerve (V2), arising from it in the pterygopalatine fossa, innervating the skin of the zygomatic and temporal regions.
Maxillary nerve

The zygomatic nerve is a branch of the maxillary nerve (V2), arising from it in the pterygopalatine fossa, innervating the skin of the zygomatic and temporal regions.
Mandibular nerve

The zygomatic nerve is a branch of the maxillary nerve (V2), arising from it in the pterygopalatine fossa, innervating the skin of the zygomatic and temporal regions.
Facial nerve

The zygomatic nerve is a branch of the maxillary nerve (V2), arising from it in the pterygopalatine fossa, innervating the skin of the zygomatic and temporal regions.
I find it difficult to answer

The zygomatic nerve is a branch of the maxillary nerve (V2), arising from it in the pterygopalatine fossa, innervating the skin of the zygomatic and temporal regions.

12. Through which foramen does the mental nerve (the terminal branch of the inferior alveolar nerve) exit onto the face?

Infraorbital foramen

The mental nerve (n. mentalis) exits the mandibular canal through the mental foramen, innervating the skin of the chin and lower lip.
Foramen ovale

The mental nerve (n. mentalis) exits the mandibular canal through the mental foramen, innervating the skin of the chin and lower lip.
Mental foramen

The mental nerve (n. mentalis) exits the mandibular canal through the mental foramen, innervating the skin of the chin and lower lip.
Incisive foramen

The mental nerve (n. mentalis) exits the mandibular canal through the mental foramen, innervating the skin of the chin and lower lip.
I find it difficult to answer

The mental nerve (n. mentalis) exits the mandibular canal through the mental foramen, innervating the skin of the chin and lower lip.

13. The motor root of the trigeminal nerve (radix motoria) joins with:

Ophthalmic nerve

The motor root passes beneath the trigeminal ganglion without entering it and fully joins the mandibular nerve (V3), making it mixed.
Maxillary nerve

The motor root passes beneath the trigeminal ganglion without entering it and fully joins the mandibular nerve (V3), making it mixed.
Mandibular nerve

The motor root passes beneath the trigeminal ganglion without entering it and fully joins the mandibular nerve (V3), making it mixed.
All three branches of the trigeminal nerve

The motor root passes beneath the trigeminal ganglion without entering it and fully joins the mandibular nerve (V3), making it mixed.
I find it difficult to answer

The motor root passes beneath the trigeminal ganglion without entering it and fully joins the mandibular nerve (V3), making it mixed.

14. Which branches of the maxillary nerve form the superior dental plexus?

Superior alveolar nerves

The superior alveolar nerves (nn. alveolares superiores: anterior, middle, and posterior) anastomose in the thickness of the maxilla, forming the superior dental plexus.
Inferior alveolar nerves

The superior alveolar nerves (nn. alveolares superiores: anterior, middle, and posterior) anastomose in the thickness of the maxilla, forming the superior dental plexus.
Palatine nerves

The superior alveolar nerves (nn. alveolares superiores: anterior, middle, and posterior) anastomose in the thickness of the maxilla, forming the superior dental plexus.
Pterygopalatine nerves

The superior alveolar nerves (nn. alveolares superiores: anterior, middle, and posterior) anastomose in the thickness of the maxilla, forming the superior dental plexus.
I find it difficult to answer

The superior alveolar nerves (nn. alveolares superiores: anterior, middle, and posterior) anastomose in the thickness of the maxilla, forming the superior dental plexus.

15. The apparent origin of the trigeminal nerve from the brain is at:

Cerebellopontine angle

The trigeminal nerve exits the brainstem on the anterior surface of the pons, at the junction with the middle cerebellar peduncles.
Junction of the pons and the middle cerebellar peduncles

The trigeminal nerve exits the brainstem on the anterior surface of the pons, at the junction with the middle cerebellar peduncles.
Olives of the medulla oblongata

The trigeminal nerve exits the brainstem on the anterior surface of the pons, at the junction with the middle cerebellar peduncles.
Interpeduncular fossa

The trigeminal nerve exits the brainstem on the anterior surface of the pons, at the junction with the middle cerebellar peduncles.
I find it difficult to answer

The trigeminal nerve exits the brainstem on the anterior surface of the pons, at the junction with the middle cerebellar peduncles.

16. Which branch of the ophthalmic nerve gives off the communicating branch to the ciliary ganglion (radix sensoria ganglii ciliaris)?

Frontal nerve

The nasociliary nerve (n. nasociliaris) gives off the sensory root to the parasympathetic ciliary ganglion.
Lacrimal nerve

The nasociliary nerve (n. nasociliaris) gives off the sensory root to the parasympathetic ciliary ganglion.
Supratrochlear nerve

The nasociliary nerve (n. nasociliaris) gives off the sensory root to the parasympathetic ciliary ganglion.
Nasociliary nerve

The nasociliary nerve (n. nasociliaris) gives off the sensory root to the parasympathetic ciliary ganglion.
I find it difficult to answer

The nasociliary nerve (n. nasociliaris) gives off the sensory root to the parasympathetic ciliary ganglion.

17. Secretory parasympathetic fibers to the lacrimal gland enter the lacrimal nerve via an anastomosis with:

Frontal nerve

The zygomatic nerve (a branch of V2) carries postganglionic parasympathetic fibers from the pterygopalatine ganglion, transferring them to the lacrimal nerve (a branch of V1) for lacrimal gland innervation.
Zygomatic nerve

The zygomatic nerve (a branch of V2) carries postganglionic parasympathetic fibers from the pterygopalatine ganglion, transferring them to the lacrimal nerve (a branch of V1) for lacrimal gland innervation.
Nasociliary nerve

The zygomatic nerve (a branch of V2) carries postganglionic parasympathetic fibers from the pterygopalatine ganglion, transferring them to the lacrimal nerve (a branch of V1) for lacrimal gland innervation.
Infraorbital nerve

The zygomatic nerve (a branch of V2) carries postganglionic parasympathetic fibers from the pterygopalatine ganglion, transferring them to the lacrimal nerve (a branch of V1) for lacrimal gland innervation.
I find it difficult to answer

The zygomatic nerve (a branch of V2) carries postganglionic parasympathetic fibers from the pterygopalatine ganglion, transferring them to the lacrimal nerve (a branch of V1) for lacrimal gland innervation.

18. Which neck muscle is innervated by the branch of the mandibular nerve (V3)?

Sternocleidomastoid muscle

The anterior belly of the digastric muscle is innervated by the mylohyoid nerve (a branch of V3), while the posterior belly is innervated by the facial nerve.
Platysma (platysma)

The anterior belly of the digastric muscle is innervated by the mylohyoid nerve (a branch of V3), while the posterior belly is innervated by the facial nerve.
Anterior belly of the digastric muscle.

The anterior belly of the digastric muscle is innervated by the mylohyoid nerve (a branch of V3), while the posterior belly is innervated by the facial nerve.
Posterior belly of the digastric muscle.

The anterior belly of the digastric muscle is innervated by the mylohyoid nerve (a branch of V3), while the posterior belly is innervated by the facial nerve.
I find it difficult to answer

The anterior belly of the digastric muscle is innervated by the mylohyoid nerve (a branch of V3), while the posterior belly is innervated by the facial nerve.

19. The greater palatine nerve (n. palatinus major) descends into the oral cavity through:

Incisive canal

The greater palatine nerve (a branch of V2, arising from the pterygopalatine ganglion) passes through the greater palatine canal to the hard palate.
Greater palatine canal

The greater palatine nerve (a branch of V2, arising from the pterygopalatine ganglion) passes through the greater palatine canal to the hard palate.
Foramen lacerum

The greater palatine nerve (a branch of V2, arising from the pterygopalatine ganglion) passes through the greater palatine canal to the hard palate.
Sphenopalatine foramen

The greater palatine nerve (a branch of V2, arising from the pterygopalatine ganglion) passes through the greater palatine canal to the hard palate.
I find it difficult to answer

The greater palatine nerve (a branch of V2, arising from the pterygopalatine ganglion) passes through the greater palatine canal to the hard palate.

20. The skin of the upper lip is innervated by branches of:

Ophthalmic nerve

The upper lip receives sensory innervation from the superior labial branches (rr. labiales superiores) of the infraorbital nerve, which is a continuation of the maxillary nerve (V2).
Maxillary nerve

The upper lip receives sensory innervation from the superior labial branches (rr. labiales superiores) of the infraorbital nerve, which is a continuation of the maxillary nerve (V2).
Mandibular nerve

The upper lip receives sensory innervation from the superior labial branches (rr. labiales superiores) of the infraorbital nerve, which is a continuation of the maxillary nerve (V2).
Facial nerve

The upper lip receives sensory innervation from the superior labial branches (rr. labiales superiores) of the infraorbital nerve, which is a continuation of the maxillary nerve (V2).
I find it difficult to answer

The upper lip receives sensory innervation from the superior labial branches (rr. labiales superiores) of the infraorbital nerve, which is a continuation of the maxillary nerve (V2).