Human skeleton system

1. Dr.A. P. J. Abdul Kalam
institute of Forensic
science and criminology
Topic: The Skeleton System
Ahsan Ali
M.Sc Forensic science
3rd semester

2. The Skeleton System
• The Skeleton system is your body
Framework.It consists of bones and
connective tissue, including Cartilage, tendons
and ligaments.It’s also called the
musculoskeletal system.
• The Skeleton is the framework that provides
structure to the rest of the body and facilities
movement.
• Bone is active tissue.

3. Function of Skeleton system
Support:shape
Movement:
Protection:
Mineral Storage:(Electrolyte balance)
Hemopoiesis: Blood cells formation
Detoxification:

4. Anatomy
Appendicular skeleton
Axial Skeleton

5. Axial Skeleton
Vertibral calumn(33)
• Cervical=7
• Thoracic=12
• Lumber=5
• Secrum=5
• Coccyx=4

6. Ribs=24 Sterum=1

7. Head=29
Facial bones(14) Cranial bones(8)

8. Ear bones=MIS(6) Hyoide bones(1)

9. Appendicular
skeleton
Upper limb(60)
Humerus(1)
Radius (1)
Ulna(1)
Carpals(8)
Metacarpals(5)
Phalanges(14)
Total(30×2=60)

10. Lower limb(60)
Femur(1)
Patella (1)
Tibia(1)
Fibula(1)
Tarsals(7)
Metatarsals(5)
Phalanges(14)
Total(30×2=60)

11. Calvicle(2)
Pelvis (2) Scapula(2)

12. General shape of Bones
>Bones can be categorized according to their general shape
Long (90)
Short (28)
Flat (36)
Irregular (48)
Sesamoid (4)

13. Structure of Bone

14. Articulation of Bone
>Articulations:Joints between bones
Hold bones togather While usually allowing some
movement.
>Can classified by ; (1).Degree Of movement
(2).Structure of the joint
1.Degree Of
movement
• Synarthroses(joined
together joint.
(immoveable)
• Amphiarthroses(on both
side joint).
(Slightly Moveable)
• Diarthroses(throught a
joining).
(Freely moveable)

15. 2.Structure
of the joint
• Fibrous Joint:
immoveable
• Cartilaginous
Joint:.
slightly Moveable
• Synovial:
Freely moveable

16. Examples of The Three kinds of
articulations
(1) Immoveable (Fibrous)
joints
Eg.Syndesmoses
Eg.Sutures Eg.Gomphoses
-Teeth in socket
-Only in skull -Fibrous bands
between two bones

17. (2) Slightly Moveable (Cartilaginous)
Eg.Symphyses Eg.Synchondroses
-Midline of body -Hyaline cartilage joins
two bones

18. (3) Freely moveable (Synovial)
Eg.Biaxial
Eg.Uniaxial Eg.Multiaxial
-Hing joint (Finger, tones, elbow).
-Pivot joint (Head, radius,at hand).
-Gliding joint (Carpals,tarsals).
-Ball and socket joint (Shoulder,hip)
-Condyloid joints (Metacarpals-Phalanges).
-Saddle joint (Metacarpal-thumb).

19. Reference;
1). Forensic Anthropology Training Manual
3rd edition by Joanna Wallington.
2). Introduction To Forensic Anthropology
5th edition by Steven N.Byers.
3).The Use of Forensic Anthropology 2nd
edition by Robert Pickering David
Bachman.

20. Thank you