Internal carotid artery anatomy test

1. In which part of the internal carotid artery are branches generally absent?

• Cavernous

  In the cervical part (pars cervicalis) of the internal carotid artery, branches are normally absent until entering the carotid canal.

• Cerebral

  In the cervical part (pars cervicalis) of the internal carotid artery, branches are normally absent until entering the carotid canal.

• Petrous

  In the cervical part (pars cervicalis) of the internal carotid artery, branches are normally absent until entering the carotid canal.

• Cervical

  In the cervical part (pars cervicalis) of the internal carotid artery, branches are normally absent until entering the carotid canal.

• I find it difficult to answer

  In the cervical part (pars cervicalis) of the internal carotid artery, branches are normally absent until entering the carotid canal.

2. Through which foramen does the internal carotid artery penetrate the pyramid of the temporal bone?

• Jugular foramen

  The internal carotid artery enters the skull through the external aperture of the carotid canal, situated on the inferior surface of the temporal bone's pyramid.

• Foramen lacerum

  The internal carotid artery enters the skull through the external aperture of the carotid canal, situated on the inferior surface of the temporal bone's pyramid.

• External aperture of the carotid canal

  The internal carotid artery enters the skull through the external aperture of the carotid canal, situated on the inferior surface of the temporal bone's pyramid.

• Foramen spinosum

  The internal carotid artery enters the skull through the external aperture of the carotid canal, situated on the inferior surface of the temporal bone's pyramid.

• I find it difficult to answer

  The internal carotid artery enters the skull through the external aperture of the carotid canal, situated on the inferior surface of the temporal bone's pyramid.

3. Which artery is the first major branch of the cerebral part of the internal carotid artery?

• Ophthalmic artery

  The ophthalmic artery (a. ophthalmica) originates from the cerebral part of the internal carotid artery immediately after exiting the cavernous sinus.

• Anterior cerebral artery

  The ophthalmic artery (a. ophthalmica) originates from the cerebral part of the internal carotid artery immediately after exiting the cavernous sinus.

• Middle cerebral artery

  The ophthalmic artery (a. ophthalmica) originates from the cerebral part of the internal carotid artery immediately after exiting the cavernous sinus.

• Posterior communicating artery

  The ophthalmic artery (a. ophthalmica) originates from the cerebral part of the internal carotid artery immediately after exiting the cavernous sinus.

• I find it difficult to answer

  The ophthalmic artery (a. ophthalmica) originates from the cerebral part of the internal carotid artery immediately after exiting the cavernous sinus.

4. In which fascial structure does the internal carotid artery pass through the neck alongside the internal jugular vein and the vagus nerve?

• Prevertebral fascia

  The internal carotid artery, internal jugular vein, and vagus nerve are enclosed within the fascial sheath (vagina carotica).

• Carotid sheath (vagina carotica)

  The internal carotid artery, internal jugular vein, and vagus nerve are enclosed within the fascial sheath (vagina carotica).

• Superficial fascia of the neck

  The internal carotid artery, internal jugular vein, and vagus nerve are enclosed within the fascial sheath (vagina carotica).

• Visceral fascia of the neck

  The internal carotid artery, internal jugular vein, and vagus nerve are enclosed within the fascial sheath (vagina carotica).

• I find it difficult to answer

  The internal carotid artery, internal jugular vein, and vagus nerve are enclosed within the fascial sheath (vagina carotica).

5. Which cranial nerve lies directly adjacent to the internal carotid artery within the cavernous sinus?

• Oculomotor nerve

  The abducens nerve (cranial pair VI) traverses within the body of the cavernous sinus, positioned laterally and inferior to the internal carotid artery.

• Trochlear nerve

  The abducens nerve (cranial pair VI) traverses within the body of the cavernous sinus, positioned laterally and inferior to the internal carotid artery.

• Ophthalmic nerve

  The abducens nerve (cranial pair VI) traverses within the body of the cavernous sinus, positioned laterally and inferior to the internal carotid artery.

• Abducens nerve

  The abducens nerve (cranial pair VI) traverses within the body of the cavernous sinus, positioned laterally and inferior to the internal carotid artery.

• I find it difficult to answer

  The abducens nerve (cranial pair VI) traverses within the body of the cavernous sinus, positioned laterally and inferior to the internal carotid artery.

6. Which branches arise from the petrous part of the internal carotid artery?

• Meningeal branches

  The caroticotympanic arteries (aa. caroticotympanicae) arise from the petrous part of the artery and penetrate the tympanic cavity.

• Inferior hypophyseal artery

  The caroticotympanic arteries (aa. caroticotympanicae) arise from the petrous part of the artery and penetrate the tympanic cavity.

• Caroticotympanic arteries

  The caroticotympanic arteries (aa. caroticotympanicae) arise from the petrous part of the artery and penetrate the tympanic cavity.

• Anterior choroidal artery

  The caroticotympanic arteries (aa. caroticotympanicae) arise from the petrous part of the artery and penetrate the tympanic cavity.

• I find it difficult to answer

  The caroticotympanic arteries (aa. caroticotympanicae) arise from the petrous part of the artery and penetrate the tympanic cavity.

7. With which arteries does the internal carotid artery terminate (terminal branches)?

• Anterior and middle cerebral arteries

  The internal carotid artery divides into its terminal branches: the anterior (a. cerebri anterior) and middle (a. cerebri media) cerebral arteries.

• Anterior and posterior cerebral arteries

  The internal carotid artery divides into its terminal branches: the anterior (a. cerebri anterior) and middle (a. cerebri media) cerebral arteries.

• Middle and posterior cerebral arteries

  The internal carotid artery divides into its terminal branches: the anterior (a. cerebri anterior) and middle (a. cerebri media) cerebral arteries.

• Ophthalmic and anterior cerebral arteries

  The internal carotid artery divides into its terminal branches: the anterior (a. cerebri anterior) and middle (a. cerebri media) cerebral arteries.

• I find it difficult to answer

  The internal carotid artery divides into its terminal branches: the anterior (a. cerebri anterior) and middle (a. cerebri media) cerebral arteries.

8. Which artery does the posterior communicating artery connect the internal carotid artery to?

• Anterior cerebral artery

  The posterior communicating artery (a. communicans posterior) anastomoses with the posterior cerebral artery (of the vertebral artery system).

• Middle cerebral artery

  The posterior communicating artery (a. communicans posterior) anastomoses with the posterior cerebral artery (of the vertebral artery system).

• Basilar artery

  The posterior communicating artery (a. communicans posterior) anastomoses with the posterior cerebral artery (of the vertebral artery system).

• Posterior cerebral artery

  The posterior communicating artery (a. communicans posterior) anastomoses with the posterior cerebral artery (of the vertebral artery system).

• I find it difficult to answer

  The posterior communicating artery (a. communicans posterior) anastomoses with the posterior cerebral artery (of the vertebral artery system).

9. Through which canal does the ophthalmic artery enter the orbit?

• Superior orbital fissure

  The ophthalmic artery (a. ophthalmica) passes into the orbit with the optic nerve through the optic canal (canalis opticus).

• Optic canal

  The ophthalmic artery (a. ophthalmica) passes into the orbit with the optic nerve through the optic canal (canalis opticus).

• Inferior orbital fissure

  The ophthalmic artery (a. ophthalmica) passes into the orbit with the optic nerve through the optic canal (canalis opticus).

• Foramen rotundum

  The ophthalmic artery (a. ophthalmica) passes into the orbit with the optic nerve through the optic canal (canalis opticus).

• I find it difficult to answer

  The ophthalmic artery (a. ophthalmica) passes into the orbit with the optic nerve through the optic canal (canalis opticus).

10. How is the internal carotid artery positioned in relation to the external carotid artery in the initial section of the carotid triangle?

• Medially and anteriorly

  At the site of bifurcation and within the carotid triangle, the internal carotid artery is usually positioned laterally and posteriorly to the external carotid artery.

• Laterally and anteriorly

  At the site of bifurcation and within the carotid triangle, the internal carotid artery is usually positioned laterally and posteriorly to the external carotid artery.

• Laterally and posteriorly

  At the site of bifurcation and within the carotid triangle, the internal carotid artery is usually positioned laterally and posteriorly to the external carotid artery.

• Medially and posteriorly

  At the site of bifurcation and within the carotid triangle, the internal carotid artery is usually positioned laterally and posteriorly to the external carotid artery.

• I find it difficult to answer

  At the site of bifurcation and within the carotid triangle, the internal carotid artery is usually positioned laterally and posteriorly to the external carotid artery.

11. Which of the listed arteries arises from the cavernous part of the internal carotid artery?

• Superior hypophyseal artery

  The inferior hypophyseal artery arises in the cavernous part and supplies the neurohypophysis, while the superior arises in the cerebral part.

• Inferior hypophyseal artery

  The inferior hypophyseal artery arises in the cavernous part and supplies the neurohypophysis, while the superior arises in the cerebral part.

• Anterior choroidal artery

  The inferior hypophyseal artery arises in the cavernous part and supplies the neurohypophysis, while the superior arises in the cerebral part.

• Ophthalmic artery

  The inferior hypophyseal artery arises in the cavernous part and supplies the neurohypophysis, while the superior arises in the cerebral part.

• I find it difficult to answer

  The inferior hypophyseal artery arises in the cavernous part and supplies the neurohypophysis, while the superior arises in the cerebral part.

12. Which branch of the internal carotid artery participates in the blood supply to the choroid plexuses of the lateral ventricles?

• Posterior communicating artery

  The anterior choroidal artery (a. choroidea anterior) arises from the cerebral part and directs to the choroid plexus of the lateral ventricle.

• Ophthalmic artery

  The anterior choroidal artery (a. choroidea anterior) arises from the cerebral part and directs to the choroid plexus of the lateral ventricle.

• Middle cerebral artery

  The anterior choroidal artery (a. choroidea anterior) arises from the cerebral part and directs to the choroid plexus of the lateral ventricle.

• Anterior choroidal artery

  The anterior choroidal artery (a. choroidea anterior) arises from the cerebral part and directs to the choroid plexus of the lateral ventricle.

• I find it difficult to answer

  The anterior choroidal artery (a. choroidea anterior) arises from the cerebral part and directs to the choroid plexus of the lateral ventricle.

13. At the level of which vertebra does the bifurcation of the common carotid artery into the external and internal usually occur in classical anatomy?

• Upper border of the thyroid cartilage (level C4)

  The bifurcation of the common carotid artery is most often projected at the level of the upper edge of the thyroid cartilage, which corresponds to the C4 vertebra.

• Lower border of the cricoid cartilage (level C6)

  The bifurcation of the common carotid artery is most often projected at the level of the upper edge of the thyroid cartilage, which corresponds to the C4 vertebra.

• Level of the hyoid bone (level C3)

  The bifurcation of the common carotid artery is most often projected at the level of the upper edge of the thyroid cartilage, which corresponds to the C4 vertebra.

• Angle of the mandible (level of C2)

  The bifurcation of the common carotid artery is most often projected at the level of the upper edge of the thyroid cartilage, which corresponds to the C4 vertebra.

• I find it difficult to answer

  The bifurcation of the common carotid artery is most often projected at the level of the upper edge of the thyroid cartilage, which corresponds to the C4 vertebra.

14. The dorsal nasal artery (terminal branch of the ophthalmic artery) anastomoses with which artery in the area of the medial eye corner?

• Infraorbital artery

  The dorsal nasal artery anastomoses with the angular artery (a. angularis), forming an important anastomosis between the internal and external carotid artery systems.

• Supraorbital artery

  The dorsal nasal artery anastomoses with the angular artery (a. angularis), forming an important anastomosis between the internal and external carotid artery systems.

• Angular artery (branch of the facial artery)

  The dorsal nasal artery anastomoses with the angular artery (a. angularis), forming an important anastomosis between the internal and external carotid artery systems.

• Transverse facial artery

  The dorsal nasal artery anastomoses with the angular artery (a. angularis), forming an important anastomosis between the internal and external carotid artery systems.

• I find it difficult to answer

  The dorsal nasal artery anastomoses with the angular artery (a. angularis), forming an important anastomosis between the internal and external carotid artery systems.

15. Which autonomic nervous plexus surrounds the internal carotid artery along its course from the carotid canal to the cranial cavity?

• Internal carotid sympathetic plexus

  The internal carotid plexus (plexus caroticus internus) is formed by postganglionic sympathetic fibers from the superior cervical ganglion.

• Parasympathetic plexus of the trigeminal nerve ganglion

  The internal carotid plexus (plexus caroticus internus) is formed by postganglionic sympathetic fibers from the superior cervical ganglion.

• Sympathetic plexus of the external carotid artery

  The internal carotid plexus (plexus caroticus internus) is formed by postganglionic sympathetic fibers from the superior cervical ganglion.

• Cervicothoracic stellate plexus

  The internal carotid plexus (plexus caroticus internus) is formed by postganglionic sympathetic fibers from the superior cervical ganglion.

• I find it difficult to answer

  The internal carotid plexus (plexus caroticus internus) is formed by postganglionic sympathetic fibers from the superior cervical ganglion.

16. In which bony structure is the carotid groove (sulcus caroticus), to which the cavernous part of the artery is adjacent, located?

• Temporal bone pyramid

  The carotid groove is located on the lateral surfaces of the body of the sphenoid bone in the cranial cavity.

• Temporal bone squama

  The carotid groove is located on the lateral surfaces of the body of the sphenoid bone in the cranial cavity.

• Occipital bone

  The carotid groove is located on the lateral surfaces of the body of the sphenoid bone in the cranial cavity.

• Body of the sphenoid bone

  The carotid groove is located on the lateral surfaces of the body of the sphenoid bone in the cranial cavity.

• I find it difficult to answer

  The carotid groove is located on the lateral surfaces of the body of the sphenoid bone in the cranial cavity.

17. Which artery, being a branch of the internal carotid, lies in the lateral sulcus (Sylvian fissure) of the brain?

• Anterior cerebral artery

  The middle cerebral artery (a. cerebri media) is the largest branch and lies in the lateral sulcus of the cerebrum.

• Posterior cerebral artery

  The middle cerebral artery (a. cerebri media) is the largest branch and lies in the lateral sulcus of the cerebrum.

• Middle cerebral artery

  The middle cerebral artery (a. cerebri media) is the largest branch and lies in the lateral sulcus of the cerebrum.

• Anterior choroidal artery

  The middle cerebral artery (a. cerebri media) is the largest branch and lies in the lateral sulcus of the cerebrum.

• I find it difficult to answer

  The middle cerebral artery (a. cerebri media) is the largest branch and lies in the lateral sulcus of the cerebrum.

18. Within which sinus of the dura mater does the internal carotid artery traverse, forming a siphon?

• Sagittal sinus

  The internal carotid artery passes directly within the cavernous sinus, where it forms a characteristic bend (carotid siphon).

• Cavernous sinus

  The internal carotid artery passes directly within the cavernous sinus, where it forms a characteristic bend (carotid siphon).

• Sigmoid sinus

  The internal carotid artery passes directly within the cavernous sinus, where it forms a characteristic bend (carotid siphon).

• Straight sinus

  The internal carotid artery passes directly within the cavernous sinus, where it forms a characteristic bend (carotid siphon).

• I find it difficult to answer

  The internal carotid artery passes directly within the cavernous sinus, where it forms a characteristic bend (carotid siphon).

19. Which artery, joining branches of both internal carotid arteries, closes the anterior part of the circle of Willis?

• Basilar artery

  The anterior communicating artery (a. communicans anterior) is unpaired and connects the right and left anterior cerebral arteries.

• Posterior communicating artery

  The anterior communicating artery (a. communicans anterior) is unpaired and connects the right and left anterior cerebral arteries.

• Labyrinthine artery

  The anterior communicating artery (a. communicans anterior) is unpaired and connects the right and left anterior cerebral arteries.

• Anterior communicating artery

  The anterior communicating artery (a. communicans anterior) is unpaired and connects the right and left anterior cerebral arteries.

• I find it difficult to answer

  The anterior communicating artery (a. communicans anterior) is unpaired and connects the right and left anterior cerebral arteries.

20. Within which triangle of the neck is the bifurcation of the common carotid artery and the initial segment of the internal carotid artery located?

• Carotid triangle

  The initial segment of the internal carotid artery projects in the carotid triangle (trigonum caroticum) of the neck.

• Submandibular triangle

  The initial segment of the internal carotid artery projects in the carotid triangle (trigonum caroticum) of the neck.

• Omotracheal triangle

  The initial segment of the internal carotid artery projects in the carotid triangle (trigonum caroticum) of the neck.

• Occipital triangle

  The initial segment of the internal carotid artery projects in the carotid triangle (trigonum caroticum) of the neck.

• I find it difficult to answer

  The initial segment of the internal carotid artery projects in the carotid triangle (trigonum caroticum) of the neck.