cranium Flashcards
1
Q
Protective housing of the Brain
A
SKULL / CALVARIUM
2
Q
A. Cranium - 8
A
Frontal - 1
Occipital - 1
Temporal – 2
Parietal - 2
Ethmoidal -1
Sphenoidal -1
3
Q
how many bones skull
A
22
4
Q
- where the Frontal Sinus is located and serves as the roof of the orbit.
- articulates with 4 cranial bones, and with 8 facial bones.
A
Frontal Bone
5
Q
- largest portion of the cranium
- articulates with 5 cranial bones
A
Parietal Bone
6
Q
- inferoposterior part of the cranium.
- where the Foramen Magnum is located.
- articulates with Atlas through Atlanto-Occipital Joint.
- articulates with 5 cranial bones.
A
Occipital Bone
7
Q
- location of Pars Petrosa or Petrous Pyramid that houses the organ of hearing and balance.
- It contains the mastoid portion of the skull.
- Location of TM fossa.
- Articulates w/ 3 cranial bones
A
Temporal Bone
8
Q
- smallest among the cranial bones of the skull.
- contains the ethmoidal sinuses within its labyrinths
- where the Crista Galli is located (E.C.G).
- articulates w/ 2 cranial and 11 facial bones
A
Ethmoid Bone
9
Q
- bat shape
- location of Sella Turcica/Turkish Saddle
- contains the sphenoid sinuses.
- contains the foramen Rotundum, Ovale, Spinosum located w/in the greater wing of the sphenoid, and also the Optic Foramen.
- keystone of the cranium
- articulates w/ all 7 cranial bones, and 5 facial bones
A
Sphenoid Bone
10
Q
bones of the cranial vault are composed of two plates of compact tissue separated by an inner layer of spongy tissue
A
diploe
11
Q
- articulations or joints of the cranium.
- classified as fibrous joints
(Immovable/ Synarthrodial-type joints)
A
sutures
12
Q
- separates the frontal bone from the two parietal bones.
A
coronal suture
13
Q
- separating the two parietal bones in the midline.
A
sagittal suture
14
Q
- separates the two parietal bones from the occipital bone.
A
lambdoidal suture
15
Q
formed by the inferior junctions of the two parietal bones with their respective temporal bones
A
squamosal sutures
16
Q
membrane-covered openings or “soft spots.”
A
fontanels
