Anatomy of the Posterior Cranial Fossa
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Questions and Answers

Which area of the skull is formed by frontal, orbital, maxillary, nasal, and mandibular bones?

  • Frontal
  • Nasal
  • Orbital (correct)
  • Maxillary

    • What is the significance of the pterion in the skull?

  • It houses the frontal bone
  • It is where the diploic veins open
  • It is located posteriorly
  • It is where the four bones articulate (correct)

    • What type of bone marrow is found in the diploë of the flat bones of the skull?

  • Red bone marrow (correct)
  • Yellow bone marrow
  • Spongy bone marrow
  • Compact bone marrow

    • What do emissary foramina in the flat bones of the skull transmit?

    <p>Emissary veins</p> Signup and view all the answers

    How many diploic veins are usually found on each side of the skull?

    <p>Four</p> Signup and view all the answers

    Which bones form the calvaria of the skull?

    <p>Frontal, sphenoid, and parietal bones</p> Signup and view all the answers

    Which bone is located between the orbits and consists of a cribriform plate and perpendicular plate?

    <p>Ethmoid bone</p> Signup and view all the answers

    What constitutes the anterior cranial fossa along with the frontal and sphenoid bones?

    <p>Ethmoid bone</p> Signup and view all the answers

    Which part of the skull is bounded by the inner surface of the frontal bone and the limbus of the sphenoid bone?

    <p>Intra Cranial Fossa</p> Signup and view all the answers

    What forms the anterior border of the prechiasmatic sulcus within the skull?

    <p>Ethmoid bone</p> Signup and view all the answers

    Which skull landmark supports the olfactory bulb and constitutes part of the nasal septum?

    <p>Cribriform plate</p> Signup and view all the answers

    What forms two triangular projections arising from the central sphenoid body in the skull?

    <p>Lesser wings of sphenoid bone</p> Signup and view all the answers

    Where does the caroticotympanic artery originate from?

    <p>Petrous part</p> Signup and view all the answers

    What is another name for the Vidian artery?

    <p>Artery of the pterygoid canal</p> Signup and view all the answers

    Which artery supplies the dura mater of the anterior cranial fossa?

    <p>Meningeal artery</p> Signup and view all the answers

    What is inconsistent in some individuals when it comes to arteries?

    <p>Vidian artery</p> Signup and view all the answers

    Which part of the pituitary gland does the inferior hypophyseal artery supply?

    <p>Posterior part</p> Signup and view all the answers

    With which artery does the Vidian artery finally anastomose?

    <p>Greater palatine artery</p> Signup and view all the answers

    Which nerve is transmitted through the internal acoustic meatus?

    <p>Facial nerve (CN VII)</p> Signup and view all the answers

    What structures are transmitted through the foramen magnum?

    <p>Medulla of the brain, vertebral arteries, and spinal accessory nerve</p> Signup and view all the answers

    Which nerves are transmitted through the jugular foramina?

    <p>Glossopharyngeal nerve and vagus nerve</p> Signup and view all the answers

    What is transmitted through the hypoglossal canal?

    <p>Hypoglossal nerve</p> Signup and view all the answers

    Where are the cerebellar fossae located?

    <p>Posteriorly to the foramen magnum</p> Signup and view all the answers

    What divides the cerebellar fossae medially?

    <p>Internal occipital crest</p> Signup and view all the answers

    Which muscle is not mentioned in the text as being part of the muscles associated with the larynx?

    <p>Masseter</p> Signup and view all the answers

    Which artery is involved in the vascularization of the structures mentioned in the text?

    <p>Maxillary artery</p> Signup and view all the answers

    Which of the following nerves is not associated with the larynx according to the text?

    <p>Hypoglossal nerve</p> Signup and view all the answers

    Which structure forms the inferior margin of the larynx?

    <p>Cricoid cartilage</p> Signup and view all the answers

    Which ligament is found below the cricoid cartilage in the larynx?

    <p>Cricotracheal ligament</p> Signup and view all the answers

    What is the function of the corniculate cartilages according to the text?

    <p>To articulate with the apices of arytenoid cartilages</p> Signup and view all the answers

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