Infratemporal fossa

The video tutorial covers the infratemporal fossa, detailing its borders and contents, including key foramina and nerves. It explains the temporomandibular joint's components and the muscles of mastication, highlighting their actions and innervation. The tutorial also discusses the nerves within the infratemporal fossa, focusing on their pathways and functions.

Which foramen transmits the mandibular branch of the trigeminal nerve (V-3) into the infratemporal fossa?

• Foramen rotundum

• Foramen lacerum

• Foramen magnum

• Foramen ovale

What is the role of the articular disk in the temporomandibular joint?

• It connects the mandible to the maxilla.

• It acts as a cushion between the mandibular fossa and condyle.

• It supports the zygomatic arch.

• It transmits the facial nerve.

Which muscle is responsible for elevating the mandible with power during mastication?

• Buccinator

• Orbicularis oris

• Masseter

• Lateral pterygoid

What is the primary action of the lateral pterygoid muscle?

• Elevates the mandible

• Retracts the mandible

• Depresses and protracts the mandible

• Rotates the mandible

From which branchial arch do the muscles of mastication derive?

• Second branchial arch

• Third branchial arch

• First branchial arch

• Fourth branchial arch

Which nerve provides general sensation to the front of the tongue?

• Hypoglossal nerve

• Lingual nerve

• Glossopharyngeal nerve

• Facial nerve

How does the chorda tympani nerve reach the infratemporal fossa?

• Via the optic canal

• Through the foramen magnum

• Via the petrotympanic fissure

• Through the jugular foramen