Untitled Quiz

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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?

2 years Signup and view all the answers

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

Fontanelles Signup and view all the answers

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

Fontanelles are larger than sutures Signup and view all the answers

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

To provide a strong tie or joint site for new bone formation Signup and view all the answers

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

Zygomaxillary suture Signup and view all the answers

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

Tension-adapted growth Signup and view all the answers

Which of the following bones is NOT a facial bone?

Occipital bone 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?

Intramembranous ossification Signup and view all the answers

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

Cambian layer Signup and view all the answers

What signals the induction of Twist during bone formation?

FGF ligand Signup and view all the answers

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

4 months Signup and view all the answers

What is the purpose of understanding molecular pathology?

To treat deformity Signup and view all the answers

What is the result of FGF signaling during bone formation?

Induction of Twist Signup and view all the answers

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

Karen Liu Signup and view all the answers

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

9-10 years Signup and view all the answers

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

Tension adaptation Signup and view all the answers

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

Craniosynostosis Signup and view all the answers

What is the approximate incidence of craniosynostosis per live births?

1:2500 Signup and view all the answers

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

Movement of the maxilla Signup and view all the answers

What is the primary factor influencing calvarial bone development?

Brain development Signup and view all the answers

What is the incidence of unicoronal plagiocephaly?

1:3500 Signup and view all the answers

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

TWIST Signup and view all the answers

What is the characteristic of Apert syndrome?

All of the above Signup and view all the answers

Which type of craniosynostosis is the most common?

Sagittal Signup and view all the answers

What is the purpose of studying human diseases in mice?

To understand the pathogenesis of human diseases Signup and view all the answers

Which of the following mutations is responsible for Apert syndrome?