1. Unit 3: Full Anterior Skeleton Homework/Notepage
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Unit 3: Full Anterior Skeleton Homework/Notepage
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2. Introduction to
The Skeletal System

3. Skeletal System
Osteology: (Osteo=bone) The study of the structure and function of the skeleton/bones
Function:
Protection: Organs
Support: Framework
Movement: Levers
Storage: Fat and Minerals (calcium and phosphorus)
How many Bones? 206
Skeletal System is divided into two categories:
Axial
Skeletal
System
Appendicular
Skeletal
System

4. Axial Skeleton
Function: Provides central support for body and protects internal organs
Skull
Ribcage
Vertebrae

5. Appendicular Skeleton
Function: Provides attachment points for muscles that allow movement.
Limbs (arms/legs)
Girdles (shoulder/pelvis)

6. Every bump, groove, and hole has a name on your bones
BONE MARKINGS
Every bump, groove, and hole has a name on your bones

7. Bone Markings Two types of bone markings:
Projections (processes) grow out from the bone
Sites for muscle attachment
Help to form joints

8. Bone Markings Two types of bone markings:
Depressions/Openings (cavities) that indent the bone
Allows blood vessels and nerves to pass

9. Joint Projections
1) Condyle: Rounded articular projection
Condyle

10. Joint Projections 2) Head: bony expansion on a narrow neck
3) Facet: smooth, nearly flat articular surface

11. Joint Projections
4) Ramus: Armlike bar of bone

12. Ligament/Tendon Projections
1) Crest: Narrow ridge of bone (Line: smaller than a crest)
2) Epicondyle: Raised area on or above a condyle
ULNA

13. 3) Tubercle: Small rounded projection
4) Tuberosity: large rounded or roughened projection
5) Trochanter: very large, blunt projection
(only on femur)

14. 6) Spine: Sharp, pointed projection
Thoracic Vertebrae

15. DEPRESSIONS Allow blood vessels or nerves to pass through.
1) Meatus: (me - A- tus) Canal or tube

16. Depressions 2) Fossa: shallow basin
3) Fissure: narrow, slit-like opening

17. Depressions
4) Sinus: Cavity within a bone; filled with air and lined with mucous membranes
5) Foramen: Round or oval opening
Foramen Magnum

18. Depressions
6) Sulcus, Groove or Furrow: a shallow depression