Surface Bones of the Cranium Flashcards
The geometric form of the normal skull is
Oval from 3 views, front, side, and top
The width of the skull is
2/3 its length
Variations of form are because of enlarged
width or length
Comparatively male skulls are
thicket, larger, and more prominent than female skulls
Changes resulting from the loss of teeth
Reduction in vertical length and alteration of the angles of the jaw
Bones of the skull as classified in the study of osteology
Flat bones
Bones of the skull are locked together by means of
Sutures
The lower jaw is not held by sutures, but by
Muscles and tendons
The skull is divided into two major sections
The cranium and the face
Encloses the brain; larger, simpler bones
The cranium
More Complex in form
Face
Restorative art studies bones which
Influence surface form or contribute to a restoration
1
Cradle for the brain
Lowest part of the back and base of the skull
Occipital Bone
Large opening which permits the entry of the spinal cord
May be used to restore a decapitation
Foramen Magnum
2
Form the superior portion of the sides and back of the cranium as well as 2/3 of the roof
Parietal Bones
Widest part of the cranium is measured between these
Parietal Eminences
Where both parietal bones join at the highest part of the cranial dome
Saggital Suture
2
Create the lower portion of the sides and base of the cranium
Temporal Bones
Vertical surface of temporal bone
Squama
Widest part of the face is between the arches
Divides the ears length in 2 equal parts
May be used to locate the correct position of a modeled ear
Zygomatic Arch
Socket for the mandible
Lies directly anterior to the ear passage
Mandibular Fossa
Posterior part of the temporal bone
Under the lobe of the ear
Serves as the attachment of the sternocleidomastoid muscle
Mastoid Process
This is the widest part of the neck
Sternocleidomastoid muscle
Opening of the ear passage
Is the keyston for accurate location of a modeled ear
External Auditory Meatus
