Human Skull Anatomy
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Questions and Answers

Which suture divides the frontal and parietal bones?

  • Coronal suture (correct)
  • Lambdoid suture
  • Sagittal suture
  • Sphenoparietal suture

Which of the following nerves pass through the superior orbital fissure?

  • Trochlear, abducens, and oculomotor nerves
  • Lacrimal, frontal, and nasociliary nerves
  • All of the above (correct)
  • Only the oculomotor nerve

What is the function of the cavernous sinus?

  • To transmit the internal carotid artery
  • To transmit the cranial nerves III and IV
  • To transmit the ophthalmic and maxillary divisions of CN 5
  • All of the above (correct)

What is the purpose of the foramen magnum?

<p>To transmit the medulla oblongata and its surrounding meninges (C)</p> Signup and view all the answers

What is the function of the lambdoid suture?

<p>To divide the occipital and parietal bones (B)</p> Signup and view all the answers

What is the name of the thinnest part of the lateral wall of the skull?

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

Which of the following is NOT a part of the hindbrain?

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

What is the function of the foramen ovale?

<p>To transmit the large sensory root and small motor root of the mandibular nerve (B)</p> Signup and view all the answers

Which cranial nerve is responsible for providing parasympathetic secretomotor function to the parotid gland?

<p>CN 9 (D)</p> Signup and view all the answers

Which of the following sinuses is NOT a type of paranasal sinus?

<p>Mastoid sinus (A)</p> Signup and view all the answers

At what age do the metopic sutures between frontal bones usually close?

<p>Up to 2 years (A)</p> Signup and view all the answers

What bone forms the lateral margin of the orbit?

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

Which sinus cavity is separated from the orbital cavity by the orbital plate of the maxilla?

<p>Maxillary sinus (B)</p> Signup and view all the answers

Which structure transmits the nasolacrimal duct?

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

Which bone forms the roof of the orbit?

<p>Frontal bone (A)</p> Signup and view all the answers

Which nerve is transmitted through the infraorbital groove and canal?

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

Which nerve is responsible for 80% of eye opening?

<p>Levator Palpebrae Superioris (A)</p> Signup and view all the answers

What is the function of the tensor tympani muscle?

<p>To dampen down vibrations of the tympanic membrane (C)</p> Signup and view all the answers

What is the function of the stapedius muscle?

<p>To dampen down vibrations of the stapes (D)</p> Signup and view all the answers

Which cranial nerve is responsible for supplying the inferior rectus muscle?

<p>CN 3 (B)</p> Signup and view all the answers

What is the function of the ophthalmic artery?

<p>To supply blood to the orbit (B)</p> Signup and view all the answers

What is the function of the lacrimal gland?

<p>To produce tears (D)</p> Signup and view all the answers

What is the function of the lacrimal ducts?

<p>To drain tears into the nasal cavity (C)</p> Signup and view all the answers

Which part of the eye does the iris divide into an anterior and posterior chamber?

<p>Aqueous humor (A)</p> Signup and view all the answers

What is the function of the levator palpebrae superioris muscle?

<p>To open the eye (D)</p> Signup and view all the answers

What is the function of the Mueller's muscle?

<p>To open the eye (D)</p> Signup and view all the answers

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