1. The Human Skeletal System

2. Types of Skeletons Exoskeleton – outside skeleton
Endoskeleton- inside skeleton

3. Function of the Skeletal System
Supports –the body and gives it shape
Protects –organs such as the heart and lungs
Enables movement
Storage of calcium and phosphorous
Produces blood cells in the marrow ****

4. Cartilage Tough, fibrous, elastic connective tissue Functions: support
Cushioning of joints
Cartilage makes up most of the embryo’s skeleton
Baby is born with 300 bones by the time he is 25 they fuse and then there is 206

5. The Bones
There are 206 bones in the human body. Born with 300. They fuse up to age 25,when growth plates fully harden (ossify). Growth plates are located at the ends of long bones.
Bones are LIVING (your bones do mend themselves)

6. Joints, Tendons & Ligaments
The place where two or more bones join together.
Joints can be movable and immovable. Being double jointed only means that there is more mobility at the joints.
Ligaments
are tough connective tissue that connect bone to bone and prevent the joint from moving in the wrong direction. (Legos connect only to other Legos )
L to L- Lego to Lego,
B to B- Bone to Bone
Tendons
attach muscle to bone.

7. 5 Basic Joints Name Movable or Immovable Type of Movement Example
Suture (interlocking)
Immovable
None
Bones of the Cranium
Pivot joint
Movable
Cranium to Neck
Ball and Socket Joint
Shoulder
Hips
Hinge Joint
Elbow
Knee
Gliding Joint
Ankle,wrist
Ribs
Vertebrae

8. Malfunctions of the Locomotion system
Arthritis: joint inflammation-There are over 100 different types of arthritis.
Tendonitis : tendon inflammation at bone junctures. Happens because of poor oxygen and nutrient supply to area. ( a common condition in athletes because of overuse)
Carpal Tunnel - a narrow, rigid passageway of ligament and bones at the base of the hand - houses the median nerve and tendons. The nerve is compressed which causes pain and numbness

9. Knee Anatomy
This site shows the parts of the knee bones,
Cartilage-torn meniscus-is torn cartilage
tendons- tentonitis
Ligaments-torn ACL,PCL,(located inside joint-no blood flow) MCL-outside-has blood flow