Assignment

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Assignment

• Complete Ex. 10 Axial Skeleton
• p 553-560
• Due Tues Feb 8
• Turn it in to me.

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Chapter 5-Osseous Tissue and Skeletal Structure

• Function of the Skeletal System
• Bone Development and Growth
• Bone Terminology

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The skeletal system is multifunctional

• Support
• Storage of minerals and lipid
• Blood cell proliferation (red marrow)
• Protection (heart, etc.)
• Leverage

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Internal Organization of a Typical Bone
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Bone Cells and Histology
Osteoprogenitor CellOsteoblastOsteocyteOsteocla
stMatrix Hydroxyapatite, Ca and P
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Types of Osseous Tissue

• Compact Bone
• Dense, found in the walls, or cortex
• Spongy or Cancellous Bone
• Network of struts and thin plates (trabeculae)
• Marrow
• Red and Yellow

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Compact Bone

• Functional Unit is the Osteon or Haversian
  Systemconcentric rings of matrix around a
  Central Canal, with connecting Peripheral Canals
• Surrounded by Periosteum on outside

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Spongy Bone

• No osteons
• Lacy network of struts called trabeculae
  reinforce the bone
• Covered by endosteum

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Marrow

• Red Marrow
• Active
• Blood Precursors
• Yellow Marrow
• Inactive
• Mostly fat

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Bone Development

• Intramembranous Ossification
• Plates of Bone e.g. skull
• Endochondral Ossification
• Long Bones

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Intramembranous Ossification
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Endochondral Ossification
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Endochondral Ossification
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Bone Circulation
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Bone Circulation
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Types of Bones

• Long
• Femur
• Short
• Carpal
• Flat
• Scapula

• Irregular
• Vertebra
• Sesamoid
• Patella
• Sutural
• Skull

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Long Bone Nomenclature
Epiphysis Metaphysis Diaphysis Metaphysis Epiphy
sis
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Bone Marking Terminology
Page 128 at the bottom
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Elevations and Projections

• Process any projection or bump
• Ramus an extension of a bone, creating an angle

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Processes for Tendons and Ligaments

• Trochanter
• Tuberosity
• Tubercle
• Crest
• Line
• Spine

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Processes for Articulations

• Head
• Neck
• Condyle
• Trochlea
• Facet

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Depressions

• Fossa
• Sulcus

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Openings

• Foramen
• Fissure
• Meatus or canal
• Sinus or antrum

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