1. The Skeletal System
Anatomy – is the study of the structure of the human body. To properly understand the body’s ability to produce movement, we need to know and understand how all the body’s systems work together. Bones and muscles perform under the direction of the brain and produce movement for physical activity.

2. Anatomy
The study of the human body. To properly understand the body’s ability to produce movement, we need to know and understand how all the body’s systems work together. Bones & muscles perform under the direction of the brain & produce movement for physical activity.
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3. Functions of the Skeletal System
Protect the vital organs and soft tissue in our body
Produce red blood cells
Reservoir for minerals (calcium & phosphate)
Provide attachments for muscles to produce movement
Protect the vital organs and soft tissue in our body
Produce red blood cells
Reservoir for minerals (calcium and phosphate)
Provide attachments for muscles to produce movement

4. Classification of Bones
The human skeleton has over 200 bones and most of them are involved in movement.
Bones are 50% fluid and 50% solid
Minerals make bones rigid
Protein makes bones strong

5. Classification of Bones
Examples
Function
Diagram
Long Bones
Femur, Humerus
Serve as levers and movement
Short Bones
Tarsals (ankle), Carpals (wrist)
Give strength to joints but decrease mobility
Flat Bones
Ribs, Scapulae
Broad site for muscle attachment and protect internal organs
Irregular Bones
Ischium, Pubis, and Vertebrae
Protect internal organs and give support to the body

6. Major Bones of the Body

7. Functions of the Skeletal System
Protect the vital organs and soft tissue in our body
Produce red blood cells
Reservoir for minerals (calcium & phosphate)
Provide attachments for muscles to produce movement
Protect the vital organs and soft tissue in our body
Produce red blood cells
Reservoir for minerals (calcium and phosphate)
Provide attachments for muscles to produce movement

8. Joints and Articulations
There are two types of joints:
Classification
Synovial
Classification Joints:
The place where the bones meet or join is called a joint or articulation.
They are classified based on the amount of movement that takes place at the joining point between the bones.

9. Joints and Articulations
Classification
Structure/Movement
Examples
Immovable
Immoveable because bones are fused together
Cranial Bone
Slightly Moveable
Slight movememt and have a fibrocartilage disk separating the bones
Vertebrae
Tibiofibular Joint
Sacroilic Joint
Freely Moveable
Freely moveable in a variety of directions because inelastic ligaments and muscles cross the joint to keep it in place.
All other joints in the body.

10. Joints and Articulations
Synovial Joints
These freely moveable joints are different from other joints in the body.
Along the surface of the bones that join together, there is cartilage to reduce the friction and absorb shock.
The joint is also enclosed by an articular capsule that hold the synovial fluid inside the joint cavity.
There are 6 types of synovial joints that provide various different amounts of movements.

11. Joints and Articulations
The 3 major types involved in fitness are:
Type
Movement
Examples
Hinge
Allows movement in one plane of motion only
Elbow, Knee
Condyloid
Allows movement in two planes of motion only
Wrist, Ankle
Ball and Socket
Allows movement in three directions and a great range of motion
Shoulder, Hip