A&P II Skull Quiz 1-pgs3-6
Another name for the posterolateral fontanel?
Mastoid Fontanel(also paired)
What is a suture?
Meaning seam or stitch
Forms the posterior part and the lower 1/3 of the cranial floor
Occipital bone
Another name for the posterior fontanel
Occipital fontanel or Lambda
Where are the posterolateral fontanel situated?
On each side of the skull at the junction of the varietal, occipital, and temporal bones
A bony prominence on each outer surface of the parietal bones
Parietal eminence
What is another name for the anterolateral fontanel?
Sphenoidal fontanel (they are paired)
Lateral or external canthus
The point @ the outer border of the eye where the upper and lower eyelids meet
What does the cerebral cranium protect?
brain from injury, the organs of sight, hearing and balance
Another name for the skull?
cranium
What allows the skull to be compressed during birth?
fontanels
Easily palpated
inion
The bridge of the nose
nasion
When do the posterolateral fontanel close?
1 or 2 months after birth, but don't completely close until age of 1 yr old
Name the 4 prominent skull sutures
1.coronal suture 2.sagittal suture 3.lambdoidal suture 4.squamosal suture
How many bones are included in the visceral cranium?
14 bones of the face
Nasal fossae
2 chambers of the nose
When does the posterior fontanel close?
2 months after birth
How many bones of the skeleton form the head?
22 bones
How many bones make up the cerebral cranium?
8 bones
Where do the nasal fosse end?
Behind the nasal part of the throat, the nasopharynx
Where are fontanels found?
Between cranial bones
Where is the posterior fontanel situated?
Between the 2 parietal bones and the occipital bone
Where is the anterior fontanel located?
Between the angles of the 2 parietal bones and the 2 segments of the fontanel bone
Where can the coronal suture be found?
Between the frontal and the two parietal bones
Where can the squamosal suture be found?
Between the parietal bone and the temporal bones
Where can the sagittal suture be found?
Between the two varietal bones in the MSP
When do the anterolateral fontanel close?
By the 3rd month after birth
The cerebral cranium is also referred to as the?
Calvarium
Orbits
Cavities for the eyeballs
Frontal Squama
Corresponds to the forehead, and gradually slopes down from the coronal suture, then turns abruptly downward
Single bone that forms the forehead and part of the roof of the skull
Frontal bone
Another name for anterior fontanel?
Frontal fontanel or Bregma
Lie deep to the superciliary arches
Frontal sinuses
What kind of joint is a suture?
Immovable joint
When does the anterior fontanel close?
In about 18-24 months
Foramen magnum
Large hole in the inferior part of the bone through which the medulla oblongata and arteries pass
Where are the anterolateral fontanel located?
Located on each side of the skull at the junction of the frontal, varietal, temporal, and spheroid bones
Squamosal part
The flat part at the back of the head
Nasal septum
The vertical partition between the 2 nasal fossae
Where can the lambdoidal suture be found?
between the parietal bones and the occipital bone
what is another name for the visceral cranium?
facial skeleton
The 2 bones, one on each side of the cerebral cranium
parietal bones
Another word for squama
scale
what does the visceral cranium form?
the bony cavities for the protection of the eyes, nasal passages, and mouth