Human Anatomy: Skull and Neck Structure

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Questions and Answers

Which term refers to the view of the skull from above?

  • Norma occipitalis
  • Norma frontalis
  • Norma lateralis
  • Norma verticalis (correct)

Which view provides insight into the skull's structure from below?

  • Norma basalis (correct)
  • Norma occipitalis
  • Norma frontalis
  • Norma lateralis

What is the term for the lateral view of the skull?

  • Norma lateralis (correct)
  • Norma occipitalis
  • Norma basalis
  • Norma verticalis

Which norma provides a view from the front of the skull?

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

Which view of the skull is observed from the back?

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

What is the primary function of the maxillae in the human skull?

<p>Formation of the upper jaw and support for teeth (A)</p> Signup and view all the answers

Which of the following bones is NOT considered part of the human skull anatomy?

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

Which structure is primarily located within the cranial cavity?

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

Which of the following correctly describes the composition of facial bones in the human skull?

<p>Includes paired and unpaired bones such as the nasal and vomer bones (A)</p> Signup and view all the answers

What connects the bones of the skull?

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

Which joint is responsible for the mobility of the mandible relative to the skull?

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

Which of the following statements about the skull is inaccurate?

<p>The skull consists only of cranial bones. (C)</p> Signup and view all the answers

What type of joint is the temporomandibular joint classified as?

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

Which part of the skull is only connected by the temporomandibular joint?

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

What is the name of the norma that examines the skull from the side?

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

Which norma specifically relates to the examination of the skull from the back?

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

What term describes the view of the skull when observed from inside?

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

Which norma refers to the examination of the skull from the front?

<p>Norma frontalis (D)</p> Signup and view all the answers

What is the term used to refer to the skull as viewed from above?

<p>Norma verticalis (D)</p> Signup and view all the answers

Which structures are transmitted through the supraorbital foramen?

<p>Supraorbital nerve and vessels (B)</p> Signup and view all the answers

Which of the following bones is involved in forming three different cavities, including the orbital cavity?

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

What anatomical feature is defined as the area on the frontal bone above the nasal bones?

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

Which option accurately describes a structural feature of the maxilla?

<p>Includes maxillary paranasal sinus (C)</p> Signup and view all the answers

Which description best fits the location of the supraorbital foramen?

<p>Situated on the frontal bone above each orbit (D)</p> Signup and view all the answers

Flashcards

Norma frontalis

Anterior view of the skull.

Norma occipitalis

Posterior view of the skull.

Norma verticalis

Superior view of the skull.

Norma lateralis

Lateral view of the skull.

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Norma basalis

Inferior view of the skull.

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Skull components

The skull and neck region's skeletal components.

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Reference text for skull study

Snell's clinical anatomy (10th edition).

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Head and neck skeleton

The framework of bones in the head and neck area.

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Skeleton region

The area of the body containing the skull and neck bones.

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Number of components in the region

Skeleton components of head and neck are at least one.

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Sutural ligament

Connective tissue that joins bones in the skull.

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Temporomandibular joint

The only mobile joint connecting the skull and mandible, allowing for jaw movement.

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Skull bone divisions

The skull bones can be classified into two main categories: cranial bones (forming the braincase) and facial bones (forming the face).

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Mandible's connection

The mandible, or lower jaw, is the only bone in the skull that is connected by a mobile joint (temporomandibular joint).

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Skull's role

Protects the brain and forms the framework of the face.

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How many skull views?

The skull is studied in six different views, each called a "norma."

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What is a norma?

A norma is a specific view of the skull used for anatomical study.

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Supraorbital Foramen

An opening in the frontal bone that allows the supraorbital nerve and vessels to pass through.

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Glabella

The smooth area between the eyebrows, located on the frontal bone.

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Nasion

The point on the skull where the nasal bones meet the frontal bone.

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Maxilla

A paired bone that forms part of the face, containing the maxillary sinus.

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What cavities does the maxilla contribute to?

The maxilla contributes to three important cavities: the orbital cavity (eye socket), nasal cavity (nose), and oral cavity (mouth).

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Study Notes

Introduction

  • The skeleton of the head and neck includes the skull, middle ear ossicles, hyoid bone, and cervical vertebrae
  • Skull (22 bones)
  • Middle ear ossicles (6)
  • Hyoid bone (1)
  • Cervical vertebrae (7)

Skull

  • Composed of several separate bones connected by immobile fibrous joints called sutures
  • The connective tissue between bones is called a sutural ligament
  • The mandible is the only bone synovially connected to the skull (temporomandibular joint)
  • Cranial bones surround the brain (8 bones)
  • Facial bones (14 bones) form the face

Neurocranium vs. Viscerocranium

  • Neurocranium: Cranial bones (8)
  • Viscerocranium: Facial bones (14)

Skull Vault/Calvarium

  • The superior part of the cranium
  • Forms the roof and side walls of the cranial cavity

Skull Base

  • The lowest part of the cranium
  • Forms the floor of the cranial cavity

Norma Views of the Skull

  • Norma frontalis: View from the front
  • Norma verticalis: View from above
  • Norma lateralis: Side view
  • Norma basalis externa: View from below (outside)
  • Norma basalis interna: View from below (inside)
  • Norma occipitalis: View from behind

Cranial Bones

  • Frontal bone (1)
  • Parietal bones (2)
  • Occipital bone (1)
  • Temporal bones (2)
  • Sphenoid bone (1)
  • Ethmoid bone (1)

Facial Bones

  • Zygomatic bones (2)
  • Maxillae (2)
  • Nasal bones (2)
  • Lacrimal bones (2)
  • Vomer (1)
  • Palatine bones (2)
  • Inferior nasal conchae (2)
  • Mandible (1)

Specific Bone Structures and Features

  • Frontal bone structures: Superciliary arches, glabella, nasion, frontal eminence, supraorbital foramen/fissure
  • Maxilla structures : Frontal process, zygomatic process, alveolar process, orbital plate, infraorbital foramen, anterior nasal spine
  • Zygomatic bone structures: Frontal process, maxillary process, orbital plate, zygomaticofacial foramen, temporal process, zygomatic arch
  • Mandible structures: Mental foramen
  • Palatine process of maxillary bone: Forms the majority of the hard palate
  • Orbital plate of maxillary bone
  • Nasal bones
  • Skull Sutures
  • Coronal suture
  • Sagittal suture
  • Lambdoid suture
  • Occipitomastoid suture
  • Anterior and Posterior fontanelles

Additional Details

  • Skull bones, both cranial and facial, are described in more detail, along with specific features of each bone. Foramina (openings) are mentioned.
  • Different norma views are explained.
  • Time of closure of fontanelles is noted.

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