Anatomy of the Head

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At what age does the obliteration of sutures between the bones of the calvaria begin on the internal surface?

40-50 years

20-30 years

30-40 years (correct)

10-20 years

What is the function of fontanelles during birth?

To facilitate the passage of oxygen to the brain

To enable the bony plates of the skull to flex (correct)

To regulate the body temperature of the infant

To protect the brain from injury

What does a depressed fontanelle indicate in an infant?

Brain injury

Malnutrition

Dehydration (correct)

Increased intracranial pressure

How many fontanelles are present in an infant?

6 Signup and view all the answers

What is the location of the anterior fontanelle?

At the junction of the sagittal, coronal and frontal sutures Signup and view all the answers

By what age does the anterior fontanelle typically close?

18-24 months Signup and view all the answers

What is Malar flush associated with?

Rise in temperature in various fevers Signup and view all the answers

Which type of Le Fort fracture involves the nasal septum?

Le Fort 1 Signup and view all the answers

What is the result of a Le Fort 2 fracture?

The medial part of the face, hard palate, and alveolar processes separate from the skull Signup and view all the answers

Which type of fracture may involve the alveolus of a canine tooth?

Fracture of the body of mandible Signup and view all the answers

What is the function of the styloid process?

To serve as a point of attachment for muscles and ligaments Signup and view all the answers

Which type of fracture may be associated with dislocation of the temperomandibular joint?

Fracture of the neck of mandible Signup and view all the answers

What is the origin of the word 'parietal'?

From the Latin 'parietalis' meaning 'belonging to the wall' Signup and view all the answers

What is the characteristic of a fracture of the angle of mandible?

It is usually oblique Signup and view all the answers

What is the function of the superior temporal line?

To serve as an attachment point for the temporal fascia Signup and view all the answers

What passes through the parietal foramen?

An emissary vein Signup and view all the answers

What is the function of the zygomatic process?

To form the zygomatic arch Signup and view all the answers

What is the location of the parietal foramen?

Along the posterior aspect of the bone, next to the sagittal suture Signup and view all the answers

How many bones make up the cranial skeleton?

8 Signup and view all the answers

What is the name of the suture that separates the occipital bone from the parietal bones?

Lambdoid Suture Signup and view all the answers

How many bones make up the facial skeleton?

14 Signup and view all the answers

What is the name of the bone that attaches to the parietal bones via the coronal suture?

Frontal Bone Signup and view all the answers

What is the name of the suture that forms the boundary between the temporal bones and parietal bones?

Squamous Suture Signup and view all the answers

What type of joints are formed between the bones of the skull?

Immovable Joints Signup and view all the answers

What is the function of the Sphenoid bone in the skull?

Forms part of the floor of the cranium Signup and view all the answers

Which bones does the Sphenoid bone articulate with?

All of the above Signup and view all the answers

What is the structure of the Sphenoid bone composed of?

A centrally placed body with greater and lesser wings Signup and view all the answers

What is the name of the saddle-shaped enclosure on the superior surface of the Sphenoid bone?

Sella turcica Signup and view all the answers

What are the two plates of the pterygoid process separated by?

Pterygoid fossa Signup and view all the answers