lif101 anatomy
Download
Skip this Video
Download Presentation
LIF101 Anatomy

Loading in 2 Seconds...

play fullscreen
1 / 56

LIF101 Anatomy - PowerPoint PPT Presentation


  • 74 Views
  • Uploaded on

LIF101 Anatomy. Bone structures of the Skull: (Face and Cranium). The Human Skull. 22 flat bones Primary functions encase/protect brain provide framework for head Two parts: Cranium (egg) Facial region (mask). Cranium of Infant. Still mostly cartilage; bones incompletely ossified

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'LIF101 Anatomy' - jude


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
lif101 anatomy
LIF101Anatomy

Bone structures of the Skull: (Face and Cranium)

the human skull
The Human Skull
  • 22 flat bones
  • Primary functions
    • encase/protect brain
    • provide frameworkfor head
  • Two parts:
    • Cranium (egg)
    • Facial region (mask)
cranium of infant
Cranium of Infant
  • Still mostly cartilage; bones incompletely ossified
  • Fontanels (“little fountains”): fibrous membranes (a.k.a. soft spots)
  • Allows head compression for birth
  • Also allows for rapid brain growth in infants
  • Bones completely ossified by approximate age of 2
cranial sutures
Cranial Sutures
  • Immovable joints
  • Joints are SUTURES
  • Serrated appearance
  • Allow tight fit among cranial bones
  • Occasionally visible on bald individuals
the cranium
The Cranium
  • Encases brain
  • Includes 8 flat bones/know 6:
    • frontal (1)
    • occipital (1)
    • parietal (2)
    • temporal (2)
frontal bone
Frontal Bone
  • forms forehead
  • frontal eminence = wide, shallow bump on frontal bone, right on the forehead.
  • Orbits = sockets where eyeballs rest
  • glabella
  • superciliary crests: more prominent on males
  • temporal lines (anterior ends)
slide17

Glabella

Glabella = Slightly sunken area between superciliary crests.

features of occipital bone
Features of Occipital Bone
  • Occipital protuberance: small bump
  • on posterior base of cranium
  • Nuchal lines: horizontal ridges on

either side of O. Protuberance

  • Foramen magnum: large hole at
  • base of skull through which
  • spinal cord exits the cranium
parietal bone
Parietal Bone
  • from L. paries (wall)
  • Bilateral
  • forms “roof” of skull
  • temporal line
  • parietal eminence (widest part of the skull)
temporal bone
Temporal Bone
  • Forms “temple”
  • bilateral
  • auditory meatus
  • mastoid process
  • zygomatic process (and zygomatic arch)
mastoid process a large bump posterior behind and inferior below the auditory meatus
Mastoid Process: a large bump posterior (behind) and inferior (below) the auditory meatus.
  • Can be felt behind and below the ear.
zygomatic bone zygoma
Zygomatic Bone (zygoma)
  • a.k.a. cheek bones
  • bilateral
  • part of zygomatic arch
  • widest point on the face
zygomatic arch
Zygomatic Arch

Formed by Zygomatic bone + Zygomatic process of temporal bone

zygomatic process
Zygomatic process

of temporal bone

Is widest point on the face

nasal bones
Nasal Bones
  • only in bridge of nose
  • often considered one bone, but is actually two, so…
  • bilateral
  • remainder of nose is cartilage and fat tissue
maxilla e
Maxilla(e)
  • Often considered one bone, but is actually two, so…
  • Bilateral (on both sides of the midline. The hands are bilateral.)
  • canine fossa (for cheek muscles
  • hard palate (roof of mouth)
  • dental arch with alveoli for upper teeth
dental arch
Dental Arch
  • The superior portion of the 2 Maxillae that form the roof of the mouth
the alveoli
The Alveoli
  • Pockets in the Maxilla in which the roots of the upper teeth rest
canine fossa a depression on the maxilla in which cheek muscles rest
Canine Fossa: a depression on the MAXILLA in which cheek muscles rest
  • Fossa is the Latin word for ditch or trench.
  • Fossa (anatomy) is an anatomical term that referring to a depression or hollow, in general, in a bone

Canine Fossa

mandible
Mandible
  • a.k.a. jaw bone
  • Temporal-mandibular joint (T.M.J.)
  • Attaches to the temporal bone.
  • Only movable joint in the skill
  • angle of mandible
  • mental protuberance
  • alveoli for lower teeth
temporal mandibular joint
Temporal-mandibular joint
  • TMJ syndrome:
  • Pain or dysfunction of the temporal-mandibular joint is commonly referred to as "TMJ",
  • Problems involving the TMJs and the muscles, tendons, ligaments, blood vessels, and other tissues associated with them.
slide44

In anatomy, “mental” means “of the chin area.” The Mental Protuberance is a prominent surface landmark.

mandible1
Mandible
  • a.k.a. jaw bone
  • Temporal-mandibular joint (T.M.J.)
  • Attaches to the temporal bone.
  • Only movable joint in the skill
  • angle of mandible
  • mental protuberance
  • alveoli for lower teeth
reading assignments
Reading Assignments
  • Peck, pages 10 – 21
  • Quiz 1 NEXT WEEK: Will cover first two lectures: 1) basic anatomical and skeletal terms, and 2) skull
ad