Test 2: Skull Flashcards
What word refers to the bones that cradle the brain?
Neurocranium
What word refers to the bones of the face that house sensory organs?
Viscerocranium
What are the two parts of the neurocranium?
Chondrocranium (the cartilaginous base of the skull)
Desmocranium (all the outside bones)
How many ossification centers does the frontal bone have?
2
How many features does the frontal bone have?
Can you name them?
8
Glabella
Temporal lines
Temporal fossa
Superciliary arches
Supraorbital margins
Frontal sinuses
Foramen cecum
Supraorbital foramen or notch
What bone is the zygomatic arch mostly made up of?
Temporal bone
Partly zygomatic bone, mostly temporal bone
Does the common carotid go through the foramen lacerum?
No, but you can see the common carotid through this foramen
What bones are both viscerocranium and neurocranium?
Ethmoid bone, sphenoid bone, and temporal bone
What are the distinct cavities of the skull?
Anterior cranial fossa
Middle cranial fossa
Posterior cranial fossa
What does the glabella reside on?
The frontal bone
On which bone will you find the temporal lines?
The frontal bone and parietal bones
What bone houses the temporal fossa?
The frontal bone
What bone houses the superciliary arches?
The frontal bone
On which bone are the supraorbital margins found?
The frontal bone
Where are the frontal sinuses found?
On the frontal bone
On which bone will you find the foramen cecum?
The frontal bone
Where do you find the supraorbital foramen/notch?
Frontal bone
Where is the coronal suture found?
Running coronally and forming the border between the parietal bones and the frontal bone
Where is the sagittal suture found?
On the midline of the skull running posteriorly from the coronal suture, separating the parietal bones
What two bones do the squamous sutures separate?
Temporal and parietal bones
What two bones do the lamboid sutures separate?
Occipital and parietal bones
Where are the penetrant parietal foramina (PF) found?
On the parietal bones near the sagittal suture
Where is the groove for the meningeal artery found?
Inner side of parietal bones
What bone of the skull connects to the vertebral column?
Occipital bone
Where do you find the external occipital protuberance?
Occipital bone
On which bone is the foramen magnum found?
Occipital bone
Where do you find the condylar canal?
Occipital bone
Where do you find the hypoglossal canal
Occipital bone
Where do you find the pharyngeal tubercle
Occipital bone
Where do you find the occipital condyles? What do they articulate with?
Occipital bone (articulate with atlas)
Where do you find the superior and inferior nuchal lines?
Occipital bone
Where do you find the zygomatic process?
On the temporal bone
Where do you find the external acoustic meatus?
Temporal bone
Where do you find the mastoid process?
Temporal bone
Where do you find the mastoid notch?
Temporal bone
Where do you find the styloid process?
Temporal bone
Where do you find the mandibular fossa?
Temporal bone
Where do you find the petrotympanic fissure?
Temporal bone
Where do you find the articular tubercle
Temporal bone
The majority of the zygomatic arch is composed of what bone?
Temporal bone
Where do you find the carotid canal
Temporal bone
Where do you find the foramen lacerum>
Temporal bone
Where do you find the internal acoustic meatus
Temporal bone
Where do you find the ossea tubae auditivae
Temporal bone
Where do you find the stylomastoid foramen
Temporal bone
Where do you find the Croat galli
Ethmoid bone
Where do you find ethmoid air cells
Ethmoid bone
Where do you find the superior and middle concha and meatus?
Ethmoid bone
Where do you find the perpendicular plate?
Ethmoid bone
What bone makes up the medial wall of the orbit?
Ethmoid bone
Where are the anterior and posterior ethmoidal foramen found?
Ethmoidal bone
What are the four fontanelles?
Anterior, posterior, sphenoid, and mastoid fontanelles
What are the four sinuses?
Ethmoid, sphenoid, frontal, maxillary
What do the ethmoid air cells, frontal sinus, and maxillary sinus communicate through with the nasal cavity?
Hiatus semilunaris
What are the tooth sockets known as?
Alveoli
What bones are part of the neurocranium and the viscerocranium?
Sphenoid bone
Ethmoid Bone
Temporal Bone
What are the bones of the Neurocranium?
Frontal Bone
Occipital Bone
Parietal Bone
Sphenoid Bone* (excluding pterygoid process)
Ethmoid Bone* (cribiform plate)
Temporal Bone* (squamous/petrous)
What are the bones of the viscerocranium?
Nasal Bone Lacrimal Bone Maxilla Zygomatic Bone Mandible Vomer Inferior Nasal Turbinate Palatine Bone Hyoid Bone
Sphenoid Bone* (pterygoid process)
Ethmoid Bone* (excluding cribiform plate)
Temporal Bone* (tympanic/styloid process)
