Anatomy of Skull Openings
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Questions and Answers

Which artery passes through the foramen spinosum?

  • Middle cerebral artery
  • Middle meningeal artery (correct)
  • Posterior auricular artery
  • Anterior inferior cerebellar artery

What is the function of the nervous spinosus?

  • It is responsible for the sensation of taste
  • It innervates the dura mater of the posterior cranial fossa
  • It is a meningeal branch of the mandibular nerve (correct)
  • It is a branch of the trigeminal nerve that supplies the skin of the face

What is the origin of the middle meningeal artery?

  • Vertebral artery
  • Mandibular artery
  • External carotid artery
  • Maxillary artery (correct)

Which nerve gives rise to the nervous spinosus?

<p>Mandibular nerve (B)</p> Signup and view all the answers

What is the location of the foramen spinosum?

<p>Greater wing of the sphenoid bone (B)</p> Signup and view all the answers

What type of joint is described in the content?

<p>Synovial condyloid joint (D)</p> Signup and view all the answers

Which of the following best represents the classification of the joint mentioned?

<p>Modified hinge joint (A)</p> Signup and view all the answers

What alternate term is sometimes used to classify the joint type mentioned?

<p>Ellipsoid joint (D)</p> Signup and view all the answers

In anatomical terms, which classification is least likely to be associated with the joint discussed?

<p>Arthrodial joint (D)</p> Signup and view all the answers

Which characteristic is typical of a synovial condyloid joint?

<p>Permits movement in two planes (D)</p> Signup and view all the answers

What is contained within the anterior cranial fossa?

<p>Cribriform plate and foramen cecum (D)</p> Signup and view all the answers

What anatomical structure is the maxillary artery traveling through when it passes laterally with the infratemporal fossa through the pterygomaxillary fissure?

<p>The pterygoid canal (D)</p> Signup and view all the answers

Which of the following structures is NOT part of the anterior cranial fossa?

<p>Foramen magnum (A)</p> Signup and view all the answers

Which of the following structures is NOT directly involved in the passage of the maxillary artery through the pterygomaxillary fissure?

<p>The zygomatic bone (D)</p> Signup and view all the answers

Which of the following best describes the location of the cribriform plate?

<p>In the anterior cranial fossa (C)</p> Signup and view all the answers

What is the primary function of the maxillary artery after it passes through the pterygomaxillary fissure?

<p>Supplying blood to the teeth and surrounding structures (A)</p> Signup and view all the answers

What is the clinical significance of understanding the passage of the maxillary artery through the pterygomaxillary fissure?

<p>It is important for procedures like dental injections and biopsies (C)</p> Signup and view all the answers

What does the foramen cecum primarily serve as?

<p>Connection between the nasal cavity and the cranial cavity (A)</p> Signup and view all the answers

Which statement regarding the anterior cranial fossa is correct?

<p>It is primarily formed by the frontal bone. (C)</p> Signup and view all the answers

Which of the following statements accurately describes the location of the infratemporal fossa in relation to the pterygomaxillary fissure?

<p>The infratemporal fossa is posterior to the pterygomaxillary fissure (C)</p> Signup and view all the answers

Which structure is associated with the lateral relation of the TMJ?

<p>Parotid gland (D)</p> Signup and view all the answers

Identify the correct posterior relation of the TMJ.

<p>Tympanic plate (A)</p> Signup and view all the answers

Which element is found in the anterior relation of the TMJ?

<p>Masseteric nerve (C)</p> Signup and view all the answers

What structure is not considered part of the medial relation of the TMJ?

<p>Parotid gland (D)</p> Signup and view all the answers

Which of the following best describes the lateral relation of the TMJ?

<p>Involves the masseteric nerve (A)</p> Signup and view all the answers

Flashcards

Middle meningeal artery

Artery that passes through foramen spinosum to supply the meninges.

Nervous spinosus

Meningeal branch of the mandibular nerve responsible for sensory innervation.

Maxillary artery

Main artery that gives rise to the middle meningeal artery.

Mandibular nerve

Nerve that gives rise to the nervous spinosus, contributing to sensation.

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Foramen spinosum

Opening located in the greater wing of the sphenoid bone for artery passage.

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Synovial condyloid joint

Joint type allowing movement in two planes, such as in the wrist.

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Modified hinge joint

A joint that primarily allows movement in one plane but has some variation.

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Ellipsoid joint

An alternate term for modified hinge joints like the wrist.

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Arthrodial joint

Least likely classification associated with synovial condyloid joints, typically planar.

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Movement in two planes

Characteristic of synovial condyloid joints that permits diverse motion.

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Cribriform plate

Structure contained within the anterior cranial fossa, associated with olfactory function.

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Pterygoid canal

Anatomical passage the maxillary artery travels through to reach the infratemporal fossa.

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Foramen magnum

Large opening at the base of the skull not part of the anterior cranial fossa.

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Zygomatic bone

Not involved in the passage of the maxillary artery through the pterygomaxillary fissure.

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Anterior cranial fossa

Area of the skull primarily formed by the frontal bone, housing important structures.

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Infratemporal fossa

Space located posterior to the pterygomaxillary fissure, contains important anatomical landmarks.

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Parotid gland

Structure associated with the lateral relation of the temporomandibular joint (TMJ).

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Tympanic plate

The correct posterior relation of the TMJ, associated with the ear area.

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Masseteric nerve

Nerve found in the anterior relation of the TMJ involved in jaw movement.

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Medial relation of the TMJ

Part of TMJ anatomy not including the parotid gland.

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Lateral relation of the TMJ

Includes structures like the masseteric nerve crucial for jaw movement.

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Study Notes

Openings of the Skull

  • The anterior cranial fossa includes the cribiform plate and the foramen cecum.
  • Foramen spinosum serves as a passage for the middle meningeal artery and the nervous spinosus, which is a meningeal branch of the mandibular nerve.

Temporomandibular Joint (TMJ)

  • Classified as a synovial condyloid joint; some classify it as an ellipsoid or modified hinge joint.

Relations of TMJ

  • Anterior: Borders the mandibular notch.
  • Posterior: Associated with the tympanic plate of the temporal bone.
  • Lateral: Relates to the parotid gland and the skin. Provides passage for mandibular nerve branches.
  • Medial: Contains the maxillary vessels.

Additional Anatomical Features

  • TMJ communicates laterally with the infratemporal fossa through the pterygomaxillary fissure, allowing the transmission of the maxillary artery.

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Description

This quiz covers the different openings of the skull, including the anterior cranial fossa and its contents.

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