1. The Skeletal System – Chapter 5
Parts of the skeletal system
Divided into two divisions
Axial skeleton
Appendicular skeleton

2. Functions of Bones
Hematopoiesis

3. Bones of the Human Body Osseous tissue Two types of bone tissue:
Figure 5.2b

4. Classification of Bones
1. Long bones
Examples:

5. Classification of Bones
2. Short bones
Examples:

6. Classification of Bones
3. Flat bones
Examples:

7. Classification of Bones
4. Irregular bones
Example:

8. Classification of Bones on the Basis of Shape
Figure 5.1

9. Gross Anatomy of a Long Bone
Diaphysis
Epiphysis
Figure 5.2a

10. Structures of a Long Bone
Periosteum
Sharpey’s fibers
Arteries
Figure 5.2c

11. Structures of a Long Bone
Articular cartilage
(Articular – relates to the joints)
Figure 5.2a

12. Epiphyseal Plate

13. Structures of a Long Bone
Medullary cavity
Infants –
Adults –
Figure 5.2a

14. Quick Write Draw and label bone: Diaphysis Epiphysis
Periosteum (what do I do??)
Sharpey’s fibers (what do I do??)
Articular Cartilage (what do I do??)

15. LET’S DO THE CHICKEN DANCE!!!!!!

16. Microscopic Anatomy of Bone
Osteon (Haversian System)
Central (Haversian) canal
Volkmann’s (perforating) canal

17. Microscopic Anatomy of Bone
Lacuna –
Canaliculi –
Lamella –
Detail of Figure 5.3

18. Quick Write
How do osteocytes receive nutrients?

19. Changes in the Human Skeleton
Ossification
Cartilage remains in isolated areas
(hyaline, fibro, elastic, articular)

20. Types of Bone Cells Osteocytes Osteoblasts Osteoclasts
remake entire skeleton about every 10 years – 10%/year

21. Bone Growth
Epiphyseal plates allow for growth of long bone during childhood

22. Stages of Bone Growth

25. Bone Remodeling
Dependent on:

26. Bone Fractures Closed (simple) fracture – Open (compound) fracture –
Treatment:

27. Common Types of Fractures – (p. 137)
Table 5.2

28. surgery

30. Broken bone kickboxing wr medical

31. Repair of Bone Fractures (diagram)

32. STOP

33. Bone Markings Bulges, depressions, and holes that serve as:
Sites of attachment for muscles, ligaments, and tendons
Joint surfaces
Conduits for blood vessels and nerves

34. Bone Markings (see table pg 134)
Categories of bone markings
A. Projections and processes – grow out from the bone surface “T”
B. Depressions or cavities – indentations “F”
CHICKENS SOON TO COME…….

35. Bone Markings: Projections – Sites of Muscle and Ligament Attachment
Tuberosity – rounded projection
Crest – narrow, prominent ridge of bone
Trochanter – large, blunt,
irregular surface
Tubercle – small rounded projection
Epicondyle – raised area
above a condyle
Spine – sharp, slender projection
Process – any bony prominence

36. Bone Markings: Projections – Projections That Help to Form Joints
Head – bony expansion carried on a narrow neck
Facet – smooth, nearly flat articular surface
Condyle – rounded articular projection
Ramus – armlike bar of bone

37. Bone Markings: Depressions and Openings
Meatus – canal-like passageway
Sinus – cavity within a bone
Fossa – shallow, basin-like depression
Foramen – round or oval opening through a bone