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Human Biology B – Mrs. Yates. Disclosure Parent Permission Slip Rules Be on time Respect - talking No cell phones No complaining Don’t misuse hall pass. Human skeleton from Andreas Vesalius's Fabrica (1543). SKELETAL SYSTEM. Human B – Mrs. Yates. Bell Quiz Day 1.

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Human Biology B – Mrs. Yates

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Human Biology B – Mrs. Yates

  • Disclosure

  • Parent Permission Slip

  • Rules

    • Be on time

    • Respect - talking

    • No cell phones

    • No complaining

    • Don’t misuse hall pass


Human skeleton from Andreas Vesalius's Fabrica (1543)

SKELETAL SYSTEM

Human B – Mrs. Yates


Bell Quiz Day 1

  • 1. How many bones do you think are in the human body?

  • 2. What is your largest bone?

  • 3. What is your smallest bone?

  • 4. Name five bones that you already know

  • 5. How many bones are you born with?


Bell Quiz Day 2

  • Define the following:

    • Anterior

    • Lateral

    • Posterior

    • Sagittal

  • Define the following vocab words:

    • Corac

    • Carp

    • Cervic

    • Cox

    • Condyl


Vocabulary

  • 1. aur-10. arthr(o)-

  • 2. –poiesis11. carp-

  • 3. brachi-12. cervic

  • 4. oss-13. dia-

  • 5. burso14. cox(a), pelv

  • 6. –genesis15. dactyl, digit

  • 7. ax-16. fov-

  • 8. front-17. scolio

  • 9. corac-18. condyl-


Axial Skeleton

  • Skull

  • Ribs

  • Vertebrae


Skull – 22 bones

  • Two parts

    • Cranium bones - 8

    • Facial bones -14

    • Not fully developed at birth

    • Thickness ~ 2 mm


Cranium (8)– bones that enclose the brain


Cranium

  • A. Frontal bone

  • B. Parietal bone (paired)

  • C. Occipital bone

  • D. Temporal bone (paired)

  • E. Sphenoid (connects cranium to facial)

  • F. Ethmoid (roof and sides of the nasal passage)


Facial – (14) Bones not enclosing brain


Facial

  • G. Lacrimal (2)

  • H. Nasal Bone (2)

  • I. Zygomatic (2) Cheek bones

  • J. Maxilla (2) upper jaw

  • K. Mandible *Only movable joint in the skull.

  • M. Vomer – Nasal Septum Bone

  • N. Palatine (2)


Color Code the Brain A-L and sutures (a,b,c)


Frontal Bone

  • Contains 2 sinuses


Frontal - damage

  • A) before surgery

  • B) CT scans

  • C) during surgery

  • D) reconstruction of frontal plates

  • E) two years after surgery


Parietal Bone - 2


  • Unusually aggressive forms of cutaneous squamous cell carcinoma are being increasingly recognized as a complication of HIV infection. We report the case of a 59-year-old male patient with advanced HIV infection who presented with a highly aggressive SCC lesion over the scalp area with destruction of the underlying parietal bone and fulminant clinical progression.


Occipital Bone


War of the roses - 1491


Temporal - 2


Temporal- Occipital region


Sphenoid (pg. 139) Batman Bone

  • Contains sinuses


Ethmoid bone

  • Upper portion of nasal septum

  • Contains sinuses


Vomer bone

  • Bottom part of nasal septum


Sutures (a,b,c)

  • Lines where bones meet, immovable joints.


Fontanels

  • Soft spots with no bones when babies are born. (Connective tissue)


  • As a fetus develops, its brain grows rapidly. The skull is growing as well but can not keep up. Fusion of the bones begins, but will complete after birth. A new born generally has 2 frontal bones, 4 occipital bones, and several sphenoid and temporal bones. These bones are held together by fontanels.


Foramen Magnum

  • Opening in occipital bone for spinal cord exit.


External Auditory Meatus

  • Opening in temporal bone for ear canals


Styloid Process

  • Sharp bone projection to help anchor muscles association with the tongue.


Mastoid Process

  • Projection from skull


Facial Bones


Lacrimal (2)

  • Thin and scale like

  • Fragile

  • Near tear ducts


Nasal Bone (2)

  • Two rectangles that form the bridge of the nose


Zygomatic Bone (2)

  • Cheek bones.

  • ‘Zygomatic Arch’ connects to the temporal bone.


Maxilla (2)

  • Form the floor of the nasal cavity and the roof of the oral cavity (hard palate).

  • Upper jaw


Mandible

  • Only moveable face bone


Ossicles

  • Bones of the ear

  • Smallest bones in body

MalleusIncusStapes

HammerAnvilStirrup


Hyoid

  • Attachment for movement of the tongue

  • doesn’t touch any other bones

  • Only floating bone


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