22_Axial Skeleton_Skull

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58 Questions

How many bones are in the adult skeleton?

206 bones

Which division of the skeleton includes the pectoral girdles and upper limbs?

Appendicular Skeleton

How many facial bones form the face?

14 bones

Which bone surrounds and encloses the brain?

Occipital bone

What is the fibrous band of tissue that connects the bones of the skull called?

Suture

Which suture is located between the frontal and parietal bones?

Coronal suture

How many parietal bones are in the skull?

2

Which division of the skeleton includes the thoracic cage?

Axial Skeleton

How many bones make up the pectoral girdles and upper limbs?

8 bones

Which bone is part of the cranial bones in the skull?

Sphenoid bone

Which bones make up the nasal septum?

Perpendicular plate of ethmoid bone, vertical plate of vomer, and lateral wall of nasal cavity

Which bone is the only bone in the body that does not articulate with any other bone?

Hyoid bone

Which bones form the paranasal sinuses?

Frontal bone, sphenoid, ethmoid, and maxilla

Which bone forms the posterior region of the hard palate?

Horizontal plate of palatine bone

Which bones make up the orbits?

Frontal bone, zygomatic bone, maxilla bone, palatine bone, lacrimal bone, ethmoid bone, and sphenoid bone

Which bone has the infraorbital foramen, an opening inferior to the orbit?

Maxilla bone

Which bone has the condylar process, a superior elevation on the posterior region?

Mandible bone

Which bone is responsible for housing a tooth in its alveolar process?

Maxilla bone

Which bone has the mental protuberance, an elevation that makes the chin?

Mandible bone

Which bone is responsible for forming part of the orbit?

Lacrimal bone

Which bone in the skull resembles a butterfly and contributes to the skull's structural integrity?

Sphenoid bone

Which bone in the skull contains the foramen magnum and serves as a key structure for brain stem passage and vertebral articulation?

Occipital bone

Which bone in the skull resembles a flower with wilted leaves and is crucial for supporting the nasal cavity and olfactory functions?

Ethmoid bone

Which bone in the skull includes the glabella, supraorbital margin, and zygomatic process, forming the superior side of the orbits?

Frontal bone

Which region of the skull houses the frontal lobes, temporal lobes, brainstem, and cerebellum?

Cranial fossae

Which bone in the skull resembles a headset and contains various elevations and openings, such as the external and internal acoustic meatus, mandibular fossa, and mastoid process?

Temporal bone

Which bone contributes to the structure and support of the face, with distinct features such as temporal, frontal, and maxillary processes?

Zygomatic bone

Which cranial nerve exits through the optic canal in the skull?

Optic nerve

Which bone in the skull resembles a butterfly and contains the sella turcica and various foramina?

Sphenoid bone

Skull contains 14 facial bones

True

The sphenoid bone is found in the axial skeleton

True

The parietal bones are connected by the lambdoid suture

True

The adult skeleton has 206 bones

True

The pectoral girdles and upper limbs are part of the axial skeleton

False

The occipital bone contains the foramen magnum

True

The ethmoid bone is part of the facial bones

False

The squamous suture is between the frontal and parietal bones

False

The axial skeleton includes the thoracic cage

True

The adult skeleton has 126 bones in the appendicular skeleton

False

Palatine bones are located in the superior region of the nasal cavity

False

The nasal conchae of the ethmoid bone are located in the lateral region of the nasal cavity

True

The mandible contains the mental protuberance, an elevation that makes the chin

True

The frontal bone is one of the bones forming the orbit

True

The hyoid bone articulates with other bones in the body

False

The paranasal sinuses are only found in the frontal and sphenoid bones

False

The inferior nasal conchae are located in the lateral region of the nasal cavity

True

The maxilla bone contains the infraorbital foramen, an opening inferior to the orbit

True

The nasal cavity is made by the nasal bone, maxilla, and palatine bones

False

The nasal septum is made by the perpendicular plate of the ethmoid bone and the vertical plate of vomer

True

The sphenoid bone contains the foramen lacerum, jugular foramen, and carotid canal, facilitating the passage of nerves and blood vessels.

True

The ethmoid bone contains the foramen magnum, occipital condyle, hypoglossal canal, and external occipital crest.

False

The cranial nerve exits are not associated with specific openings in the skull.

False

The cranial fossae are regions formed by the roof of the cranial cavity, housing the frontal lobes, temporal lobes, brainstem, and cerebellum.

False

The zygomatic bones in the skull do not have distinct features such as temporal, frontal, and maxillary processes.

False

The vomer bone contributes to the structural integrity of the face and nasal septum.

True

The occipital bone serves as key structures for brain stem passage and vertebral articulation.

True

The temporal bones do not contain various elevations and openings, such as the external acoustic and internal acoustic meatus, mandibular fossa, and mastoid process.

False

The frontal bone forms the superior side of the orbits and includes the glabella, supraorbital margin, and zygomatic process.

True

Study Notes

Anatomy of the Skull: Key Points

  • The skull is comprised of the frontal, parietal, temporal, occipital, sphenoid, and ethmoid bones, each with distinct features and functions.
  • The frontal bone includes the glabella, supraorbital margin, and zygomatic process, which articulate with other bones and form the superior side of the orbits.
  • The temporal bones resemble a headset and contain various elevations and openings, such as the external acoustic and internal acoustic meatus, mandibular fossa, and mastoid process.
  • The occipital bone features the foramen magnum, occipital condyle, hypoglossal canal, and external occipital crest, serving as key structures for brain stem passage and vertebral articulation.
  • The sphenoid bone resembles a butterfly and has greater and lesser wings, superior and inferior orbital fissures, optic canal, sella turcica, and various foramina, contributing to the skull's structural integrity.
  • The ethmoid bone resembles a flower with wilted leaves and consists of the cribriform plate, crista galli, perpendicular plate, superior and middle nasal conchae, crucial for supporting the nasal cavity and olfactory functions.
  • The skull also contains additional openings between bones, such as the foramen lacerum, jugular foramen, and carotid canal, facilitating the passage of nerves and blood vessels.
  • A mnemonic image is provided to aid in remembering the openings in the skull, relating them to a cowboy sitting on a saddle and holding reins.
  • The cranial nerve exits are associated with specific openings in the skull, such as the olfactory nerve through the cribriform plate and the optic nerve through the optic canal.
  • The cranial fossae are regions formed by the floor of the cranial cavity, housing the frontal lobes, temporal lobes, brainstem, and cerebellum.
  • The facial bones, including zygomatic bones, lacrimal bone, nasal bones, vomer, inferior nasal conchae, palatine bones, maxilla bones, and mandible, contribute to the structure and support of the face.
  • Each facial bone has distinct features, such as the zygomatic bones' temporal, frontal, and maxillary processes, and the vomer's ala and vertical plate, which contribute to the structural integrity of the face and nasal septum.

Anatomy of the Skull: Key Points

  • The skull is comprised of the frontal, parietal, temporal, occipital, sphenoid, and ethmoid bones, each with distinct features and functions.
  • The frontal bone includes the glabella, supraorbital margin, and zygomatic process, which articulate with other bones and form the superior side of the orbits.
  • The temporal bones resemble a headset and contain various elevations and openings, such as the external acoustic and internal acoustic meatus, mandibular fossa, and mastoid process.
  • The occipital bone features the foramen magnum, occipital condyle, hypoglossal canal, and external occipital crest, serving as key structures for brain stem passage and vertebral articulation.
  • The sphenoid bone resembles a butterfly and has greater and lesser wings, superior and inferior orbital fissures, optic canal, sella turcica, and various foramina, contributing to the skull's structural integrity.
  • The ethmoid bone resembles a flower with wilted leaves and consists of the cribriform plate, crista galli, perpendicular plate, superior and middle nasal conchae, crucial for supporting the nasal cavity and olfactory functions.
  • The skull also contains additional openings between bones, such as the foramen lacerum, jugular foramen, and carotid canal, facilitating the passage of nerves and blood vessels.
  • A mnemonic image is provided to aid in remembering the openings in the skull, relating them to a cowboy sitting on a saddle and holding reins.
  • The cranial nerve exits are associated with specific openings in the skull, such as the olfactory nerve through the cribriform plate and the optic nerve through the optic canal.
  • The cranial fossae are regions formed by the floor of the cranial cavity, housing the frontal lobes, temporal lobes, brainstem, and cerebellum.
  • The facial bones, including zygomatic bones, lacrimal bone, nasal bones, vomer, inferior nasal conchae, palatine bones, maxilla bones, and mandible, contribute to the structure and support of the face.
  • Each facial bone has distinct features, such as the zygomatic bones' temporal, frontal, and maxillary processes, and the vomer's ala and vertical plate, which contribute to the structural integrity of the face and nasal septum.

Test your knowledge of the anatomy of the skull with this quiz. Explore key points about the frontal, parietal, temporal, occipital, sphenoid, and ethmoid bones, along with their distinct features and functions. Gain insights into the cranial nerve exits, facial bones, and cranial fossae.

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