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Questions and Answers

What is the proportion of the face to the head in a newborn?

  • 1/8 (correct)
  • 1/4
  • 1/2
  • 3/4

What is the function of the cranial sutures in the infant skull?

  • To facilitate the growth of the calvarial bones
  • To provide a rigid structure to the skull
  • To assess the development of the baby
  • To allow for some elasticity and movement (correct)

What is the purpose of doctors feeling the skull and fontanelles of an infant?

  • To assess the health and development of the baby (correct)
  • To monitor the growth of the calvarial bones
  • To diagnose cranial sutures
  • To determine the proportion of the face to the head

What is the approximate time of closure for the anterior fontanelle?

<p>2 years (C)</p> Signup and view all the answers

What are the membrane-covered spots in the calvaria where three or more bones converge?

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

What is the main difference between sutures and fontanelles at birth?

<p>Fontanelles are larger than sutures (B)</p> Signup and view all the answers

What is the primary function of the sutures in the facial bones?

<p>To provide a strong tie or joint site for new bone formation (A)</p> Signup and view all the answers

Which of the following sutures overlaps to form a beveled joint?

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

What is the term for the type of growth that occurs at the cranial sutures, influenced by tension?

<p>Tension-adapted growth (A)</p> Signup and view all the answers

Which of the following bones is NOT a facial bone?

<p>Occipital bone (C)</p> Signup and view all the answers

What is the term for the process of bone growth that occurs at the sutures, without the presence of cartilage?

<p>Intramembranous ossification (B)</p> Signup and view all the answers

What is the term for the layer of cells that is responsible for bone growth at the sutures?

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

What signals the induction of Twist during bone formation?

<p>FGF ligand (B)</p> Signup and view all the answers

What is the age of the lambdoidal suture synostosis pre-operation?

<p>4 months (D)</p> Signup and view all the answers

What is the purpose of understanding molecular pathology?

<p>To treat deformity (C)</p> Signup and view all the answers

What is the result of FGF signaling during bone formation?

<p>Induction of Twist (B)</p> Signup and view all the answers

Who is the contact person for questions related to craniofacial and regenerative biology?

<p>Karen Liu (C)</p> Signup and view all the answers

What is the age range when the median palatine suture generally fuses?

<p>9-10 years (B)</p> Signup and view all the answers

What process allows the separation of the two halves of the maxillary complex during palatal expansion?

<p>Tension adaptation (D)</p> Signup and view all the answers

What is the name of the condition that occurs when a cranial suture fuses prematurely?

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

What is the approximate incidence of craniosynostosis per live births?

<p>1:2500 (A)</p> Signup and view all the answers

What is the reason for the gap in the front teeth when using an expander during palatal expansion?

<p>Movement of the maxilla (B)</p> Signup and view all the answers

What is the primary factor influencing calvarial bone development?

<p>Brain development (D)</p> Signup and view all the answers

What is the incidence of unicoronal plagiocephaly?

<p>1:3500 (B)</p> Signup and view all the answers

Which of the following genes is associated with Saethre-Chotzen syndrome?

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

What is the characteristic of Apert syndrome?

<p>All of the above (D)</p> Signup and view all the answers

Which type of craniosynostosis is the most common?

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

What is the purpose of studying human diseases in mice?

<p>To understand the pathogenesis of human diseases (D)</p> Signup and view all the answers

Which of the following mutations is responsible for Apert syndrome?

<p>All of the above (D)</p> Signup and view all the answers

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