Anatomy test of the infratemporal fossa and its contents

1. What structure forms the superior wall of the infratemporal fossa?

• Greater wing of sphenoid and squamous part of the temporal bone

  The superior wall of the infratemporal fossa is formed by the infratemporal crest of the greater wing of the sphenoid bone and the squamous part of the temporal bone.

• Orbital plate of the ethmoid bone

  The superior wall of the infratemporal fossa is formed by the infratemporal crest of the greater wing of the sphenoid bone and the squamous part of the temporal bone.

• Lateral pterygoid plate

  The superior wall of the infratemporal fossa is formed by the infratemporal crest of the greater wing of the sphenoid bone and the squamous part of the temporal bone.

• Maxillary tuberosity

  The superior wall of the infratemporal fossa is formed by the infratemporal crest of the greater wing of the sphenoid bone and the squamous part of the temporal bone.

• I find it difficult to answer

  The superior wall of the infratemporal fossa is formed by the infratemporal crest of the greater wing of the sphenoid bone and the squamous part of the temporal bone.

2. Through which anatomical structure does the infratemporal fossa communicate with the pterygopalatine fossa?

• Inferior orbital fissure

  Communication with the pterygopalatine fossa is medially through the narrow pterygomaxillary fissure.

• Foramen ovale

  Communication with the pterygopalatine fossa is medially through the narrow pterygomaxillary fissure.

• Pterygomaxillary fissure

  Communication with the pterygopalatine fossa is medially through the narrow pterygomaxillary fissure.

• Sphenopalatine foramen

  Communication with the pterygopalatine fossa is medially through the narrow pterygomaxillary fissure.

• I find it difficult to answer

  Communication with the pterygopalatine fossa is medially through the narrow pterygomaxillary fissure.

3. Which artery is the main vessel passing through the infratemporal fossa?

• Facial artery

  The maxillary artery (a. maxillaris) is the primary artery of the infratemporal fossa, giving off its muscular and meningeal branches here.

• Superficial temporal artery

  The maxillary artery (a. maxillaris) is the primary artery of the infratemporal fossa, giving off its muscular and meningeal branches here.

• Internal carotid artery

  The maxillary artery (a. maxillaris) is the primary artery of the infratemporal fossa, giving off its muscular and meningeal branches here.

• Maxillary artery

  The maxillary artery (a. maxillaris) is the primary artery of the infratemporal fossa, giving off its muscular and meningeal branches here.

• I find it difficult to answer

  The maxillary artery (a. maxillaris) is the primary artery of the infratemporal fossa, giving off its muscular and meningeal branches here.

4. Which muscle among the listed is located in the infratemporal fossa?

• Masseter muscle

  The lateral pterygoid muscle is entirely located in the infratemporal fossa, attaching to the condylar process of the mandible.

• Buccinator

  The lateral pterygoid muscle is entirely located in the infratemporal fossa, attaching to the condylar process of the mandible.

• Lateral pterygoid muscle

  The lateral pterygoid muscle is entirely located in the infratemporal fossa, attaching to the condylar process of the mandible.

• Orbicularis oris muscle

  The lateral pterygoid muscle is entirely located in the infratemporal fossa, attaching to the condylar process of the mandible.

• I find it difficult to answer

  The lateral pterygoid muscle is entirely located in the infratemporal fossa, attaching to the condylar process of the mandible.

5. What structure forms the medial wall of the infratemporal fossa?

• Medial plate of the pterygoid process of the sphenoid bone

  The medial wall is formed by the outer surface of the lateral plate of the pterygoid process of the sphenoid bone.

• Mandibular ramus

  The medial wall is formed by the outer surface of the lateral plate of the pterygoid process of the sphenoid bone.

• Perpendicular plate of the palatine bone

  The medial wall is formed by the outer surface of the lateral plate of the pterygoid process of the sphenoid bone.

• Lateral plate of the pterygoid process of the sphenoid bone

  The medial wall is formed by the outer surface of the lateral plate of the pterygoid process of the sphenoid bone.

• I find it difficult to answer

  The medial wall is formed by the outer surface of the lateral plate of the pterygoid process of the sphenoid bone.

6. Which nerve exits into the infratemporal fossa through the foramen ovale?

• Mandibular nerve

  The mandibular nerve (V3) exits the cranial cavity through the foramen ovale directly into the infratemporal fossa.

• Maxillary nerve

  The mandibular nerve (V3) exits the cranial cavity through the foramen ovale directly into the infratemporal fossa.

• Ophthalmic nerve

  The mandibular nerve (V3) exits the cranial cavity through the foramen ovale directly into the infratemporal fossa.

• Facial nerve

  The mandibular nerve (V3) exits the cranial cavity through the foramen ovale directly into the infratemporal fossa.

• I find it difficult to answer

  The mandibular nerve (V3) exits the cranial cavity through the foramen ovale directly into the infratemporal fossa.

7. What forms the anterior wall of the infratemporal fossa?

• Maxillary tuberosity

  The anterior wall is formed by the posterior surface of the maxilla, particularly its tuberosity (tuber maxillae).

• Zygomatic bone

  The anterior wall is formed by the posterior surface of the maxilla, particularly its tuberosity (tuber maxillae).

• Styloid process

  The anterior wall is formed by the posterior surface of the maxilla, particularly its tuberosity (tuber maxillae).

• Mammillary process

  The anterior wall is formed by the posterior surface of the maxilla, particularly its tuberosity (tuber maxillae).

• I find it difficult to answer

  The anterior wall is formed by the posterior surface of the maxilla, particularly its tuberosity (tuber maxillae).

8. Through what foramen does the middle meningeal artery leave the infratemporal fossa heading to the cranial cavity?

• Foramen spinosum

  The middle meningeal artery, a branch of the maxillary artery, exits into the middle cranial fossa through the foramen spinosum.

• Foramen ovale

  The middle meningeal artery, a branch of the maxillary artery, exits into the middle cranial fossa through the foramen spinosum.

• Foramen rotundum

  The middle meningeal artery, a branch of the maxillary artery, exits into the middle cranial fossa through the foramen spinosum.

• Jugular foramen

  The middle meningeal artery, a branch of the maxillary artery, exits into the middle cranial fossa through the foramen spinosum.

• I find it difficult to answer

  The middle meningeal artery, a branch of the maxillary artery, exits into the middle cranial fossa through the foramen spinosum.

9. What venous formation is located within the infratemporal fossa around the lateral pterygoid muscle?

• Cavernous sinus

  The pterygoid venous plexus densely surrounds the lateral pterygoid muscle in the infratemporal fossa, receiving blood from its structures.

• Facial vein

  The pterygoid venous plexus densely surrounds the lateral pterygoid muscle in the infratemporal fossa, receiving blood from its structures.

• Pharyngeal venous plexus

  The pterygoid venous plexus densely surrounds the lateral pterygoid muscle in the infratemporal fossa, receiving blood from its structures.

• Pterygoid venous plexus

  The pterygoid venous plexus densely surrounds the lateral pterygoid muscle in the infratemporal fossa, receiving blood from its structures.

• I find it difficult to answer

  The pterygoid venous plexus densely surrounds the lateral pterygoid muscle in the infratemporal fossa, receiving blood from its structures.

10. Which nerve joins the lingual nerve in the infratemporal fossa carrying parasympathetic and taste fibers?

• Auriculotemporal nerve

  The chorda tympani (facial nerve branch) exits through the petrotympanic fissure and joins the lingual nerve in the infratemporal fossa.

• Greater petrosal nerve

  The chorda tympani (facial nerve branch) exits through the petrotympanic fissure and joins the lingual nerve in the infratemporal fossa.

• Chorda tympani

  The chorda tympani (facial nerve branch) exits through the petrotympanic fissure and joins the lingual nerve in the infratemporal fossa.

• Lesser petrosal nerve

  The chorda tympani (facial nerve branch) exits through the petrotympanic fissure and joins the lingual nerve in the infratemporal fossa.

• I find it difficult to answer

  The chorda tympani (facial nerve branch) exits through the petrotympanic fissure and joins the lingual nerve in the infratemporal fossa.

11. Which branch of the mandibular nerve innervates the skin of the temporal region and auricle, passing behind the articular process of the mandible?

• Buccal nerve

  The auriculotemporal nerve splits into two roots, encircling the middle meningeal artery, and runs backward behind the neck of the mandible.

• Inferior alveolar nerve

  The auriculotemporal nerve splits into two roots, encircling the middle meningeal artery, and runs backward behind the neck of the mandible.

• Lingual nerve

  The auriculotemporal nerve splits into two roots, encircling the middle meningeal artery, and runs backward behind the neck of the mandible.

• Auriculotemporal nerve

  The auriculotemporal nerve splits into two roots, encircling the middle meningeal artery, and runs backward behind the neck of the mandible.

• I find it difficult to answer

  The auriculotemporal nerve splits into two roots, encircling the middle meningeal artery, and runs backward behind the neck of the mandible.

12. Where does the infratemporal fossa open inferiorly?

• Into the pterygopalatine fossa

  The infratemporal fossa does not have a bony floor and freely transitions inferiorly into the pterygomandibular and peripharyngeal fascial spaces.

• Into the oral cavity

  The infratemporal fossa does not have a bony floor and freely transitions inferiorly into the pterygomandibular and peripharyngeal fascial spaces.

• Into the nasal cavity

  The infratemporal fossa does not have a bony floor and freely transitions inferiorly into the pterygomandibular and peripharyngeal fascial spaces.

• Into the peripharyngeal and pterygomandibular spaces

  The infratemporal fossa does not have a bony floor and freely transitions inferiorly into the pterygomandibular and peripharyngeal fascial spaces.

• I find it difficult to answer

  The infratemporal fossa does not have a bony floor and freely transitions inferiorly into the pterygomandibular and peripharyngeal fascial spaces.

13. Which ganglion is topographically associated with the mandibular nerve in the infratemporal fossa, located below the foramen ovale?

• Ciliary ganglion

  The otic ganglion (ganglion oticum) adheres to the medial surface of the mandibular nerve immediately below the foramen ovale.

• Pterygopalatine ganglion

  The otic ganglion (ganglion oticum) adheres to the medial surface of the mandibular nerve immediately below the foramen ovale.

• Otic ganglion

  The otic ganglion (ganglion oticum) adheres to the medial surface of the mandibular nerve immediately below the foramen ovale.

• Submandibular ganglion

  The otic ganglion (ganglion oticum) adheres to the medial surface of the mandibular nerve immediately below the foramen ovale.

• I find it difficult to answer

  The otic ganglion (ganglion oticum) adheres to the medial surface of the mandibular nerve immediately below the foramen ovale.

14. With which fossa is the infratemporal fossa freely connected superiorly, lacking a distinct bony border (beneath the zygomatic arch)?

• Pterygopalatine fossa

  The boundary between the temporal and infratemporal fossae is conditionally the infratemporal crest, and they communicate freely underneath the zygomatic arch.

• Temporal fossa

  The boundary between the temporal and infratemporal fossae is conditionally the infratemporal crest, and they communicate freely underneath the zygomatic arch.

• Retromandibular fossa

  The boundary between the temporal and infratemporal fossae is conditionally the infratemporal crest, and they communicate freely underneath the zygomatic arch.

• Mastoid fossa

  The boundary between the temporal and infratemporal fossae is conditionally the infratemporal crest, and they communicate freely underneath the zygomatic arch.

• I find it difficult to answer

  The boundary between the temporal and infratemporal fossae is conditionally the infratemporal crest, and they communicate freely underneath the zygomatic arch.

15. What structure forms the lateral wall of the infratemporal fossa?

• Lateral pterygoid plate

  The ramus of the mandible (ramus mandibulae) bounds the infratemporal fossa externally (laterally).

• Mandibular ramus

  The ramus of the mandible (ramus mandibulae) bounds the infratemporal fossa externally (laterally).

• Maxillary tuberosity

  The ramus of the mandible (ramus mandibulae) bounds the infratemporal fossa externally (laterally).

• Greater wing of sphenoid bone

  The ramus of the mandible (ramus mandibulae) bounds the infratemporal fossa externally (laterally).

• I find it difficult to answer

  The ramus of the mandible (ramus mandibulae) bounds the infratemporal fossa externally (laterally).

16. Which artery from the branches of the maxillary artery does NOT originate in the infratemporal fossa (in the maxillary or pterygoid segments)?

• Sphenopalatine artery

  The sphenopalatine artery branches from the third (pterygopalatine) part of the maxillary artery, which is located in the pterygopalatine fossa.

• Middle meningeal artery

  The sphenopalatine artery branches from the third (pterygopalatine) part of the maxillary artery, which is located in the pterygopalatine fossa.

• Inferior alveolar artery

  The sphenopalatine artery branches from the third (pterygopalatine) part of the maxillary artery, which is located in the pterygopalatine fossa.

• Deep temporal artery

  The sphenopalatine artery branches from the third (pterygopalatine) part of the maxillary artery, which is located in the pterygopalatine fossa.

• I find it difficult to answer

  The sphenopalatine artery branches from the third (pterygopalatine) part of the maxillary artery, which is located in the pterygopalatine fossa.

17. How does the infratemporal fossa connect with the orbit?

• Through the optic canal

  Through the lateral part of the inferior orbital fissure, the infratemporal fossa communicates with the orbital cavity.

• Through the superior orbital fissure

  Through the lateral part of the inferior orbital fissure, the infratemporal fossa communicates with the orbital cavity.

• Through the inferior orbital fissure

  Through the lateral part of the inferior orbital fissure, the infratemporal fossa communicates with the orbital cavity.

• Through the round foramen

  Through the lateral part of the inferior orbital fissure, the infratemporal fossa communicates with the orbital cavity.

• I find it difficult to answer

  Through the lateral part of the inferior orbital fissure, the infratemporal fossa communicates with the orbital cavity.

18. What muscle originates from the lateral pterygoid plate (medial surface) and the pyramidal process of the palatine bone?

• Lateral pterygoid muscle

  The medial pterygoid muscle originates from the pterygoid fossa and the medial surface of the lateral pterygoid plate.

• Medial pterygoid muscle

  The medial pterygoid muscle originates from the pterygoid fossa and the medial surface of the lateral pterygoid plate.

• Temporalis muscle

  The medial pterygoid muscle originates from the pterygoid fossa and the medial surface of the lateral pterygoid plate.

• Masseter muscle

  The medial pterygoid muscle originates from the pterygoid fossa and the medial surface of the lateral pterygoid plate.

• I find it difficult to answer

  The medial pterygoid muscle originates from the pterygoid fossa and the medial surface of the lateral pterygoid plate.

19. Through which foramen do the posterior superior alveolar nerves enter the infratemporal fossa?

• Foramen ovale

  Alveolar apertures (foramina alveolaria) are present on the maxillary tuberosity, through which the homonymous nerves and vessels enter the bone.

• Alveolar apertures on the maxillary tuberosity

  Alveolar apertures (foramina alveolaria) are present on the maxillary tuberosity, through which the homonymous nerves and vessels enter the bone.

• Inferior orbital fissure

  Alveolar apertures (foramina alveolaria) are present on the maxillary tuberosity, through which the homonymous nerves and vessels enter the bone.

• Infraorbital foramen

  Alveolar apertures (foramina alveolaria) are present on the maxillary tuberosity, through which the homonymous nerves and vessels enter the bone.

• I find it difficult to answer

  Alveolar apertures (foramina alveolaria) are present on the maxillary tuberosity, through which the homonymous nerves and vessels enter the bone.

20. Which part of the maxillary artery is located in the infratemporal fossa, adjacent to the lateral pterygoid muscle?

• Only the pterygopalatine segment

  The first (maxillary) and second (pterygoid) segments a. maxillaris are topographically located within the infratemporal fossa.

• Maxillary and pterygoid segments

  The first (maxillary) and second (pterygoid) segments a. maxillaris are topographically located within the infratemporal fossa.

• Only the maxillary segment

  The first (maxillary) and second (pterygoid) segments a. maxillaris are topographically located within the infratemporal fossa.

• Only the cervical segment

  The first (maxillary) and second (pterygoid) segments a. maxillaris are topographically located within the infratemporal fossa.

• I find it difficult to answer

  The first (maxillary) and second (pterygoid) segments a. maxillaris are topographically located within the infratemporal fossa.