5.1 The Skull Flashcards
Greek for skull
Kranion
Latin for skull
Calvaria
Cranium: 8 Bones
- Frontal (1)
- Parietal (2)
- Occipital (1)
- Temporal (2)
- Sphenoid (1)
- Ethmoid (1)
Visceral Cranium: 14 Bones
- Maxillae (2)
- Zygomatic (2)
- Nasal (2)
- Lacrimal (2)
- Palatine (2)
- Inferior conchae or turbinates (2)
- Vomer (1)
- Mandible (1)
Other bones
- Hyoid bone (1)
* Auditory ossicles (Malleus - 2, Incus – 2, Stapes – 2)
no. of Teeth
32
a crown
Corona (Coronal Suture (1))
an arrow
Sagitta (Sagittal Suture (1))
Greek Letter Lambda
Lambdoidal Suture (1)
a scale, a thin flat plate
Squamous (Squamosal Suture (2))
Less obvious Sutures
- Metopic Suture
- Two Mendosal Sutures
•Pass obliquely upwards, one in each half of the squamous part of the occipital bone
Two Mendosal Sutures
TMJ
Temporomandibular Joint
- Synovial or diarthrodial joints
* Both hinge and gliding joint
TMJ – Temporomandibular Joint
The head or condyle of each ramus of the mandible articulates with the mandibular fossa of the corresponding temporal bone
TMJ – Temporomandibular Joint
are cavities within some of the cranial bones
Paranasal Sinuses
Paranasal Sinuses other name
accessory nasal sinuses
Maxillary sinuses also named as
antra
Greek for antra
antron
antron
a cave
suture present between two frontal bones
Metopic suture
are two rounded prominences on the squamous part of the frontal bone
Frontal eminences
ridges of bone that form the superior borders of the circular opening into each orbit
Supraorbital margins
small notch or sometimes a foramen located towards the medial end of each supraorbital margin
Supraorbital notch (or foramen)
is a smooth flat area between the medial ends of the supraorbital margins, and above the upper ends of the nasal bones
Glabella
paired cavities in the squamous part of the frontal bone above the supraorbital margins
Frontal sinuses
is a definite gap between the medial borders of the 2 orbital plates
Ethmoidal notch
pointed process that forms a small part of the nasal septum behind the nasofrontal articulations
Nasal spine
Frontal bone
- Metopic suture
- Frontal eminences
- Supraorbital margins
- Supraorbital notch (or foramen)
- Glabella
- Frontal sinuses
- Ethmoidal notch
- Nasal spine
Latin word for parietal bone
paries
wall
paries
is a rounded prominence on the lateral surface of each parietal bone
Parietal eminence, or parietal tuberosity