1. The Skeletal System

2. Skeletal System Functions: -supports the body -helps to move the body
-protects internal organs
-makes blood cells
-stores calcium and phosphorus

3. Skeletal System
Organs:
-bones
-cartilage
-ligaments
-tendons

4. bone
solid living tissue that makes up the skeleton and supports the body

5. red (bone) marrow
the part of a bone that produces blood cells (all of your red blood cells and platelets, and 60–70 percent of the white cells)
yellow marrow is mostly fat

6. cartilage
a soft, flexible tissue that makes up most of the skeleton of an infant and is found in the nose, ears, and the at the end of long bones of adults

7. joints
a place where two bones come together

8. ligaments
a strong connective tissue that holds bones together at movable joints
(connects bones to other bones)

9. Joints are broadly classified as movable or immovable.
An immovable joint allows little or no movement.
The joints of the bones in your skull and pelvis are classified as immovable joints.

10. Joints are broadly classified as movable or immovable.
There are four types of moveable joints:
pivot
ball-and-socket
hinge
gliding (or sliding or saddle)

11. pivot joint

12. ball-and-socket joint

13. hinge joints

14. gliding joint

15. pivot joint
joints that have one bone that rotates in a ring of another bone that does not move
Examples:
turning your head (from side to side)
twisting your forearm (palm up, palm down)

19. ball-and-socket joint
joints that consist of a bone with a rounded end that fits into a cuplike cavity on another bone
This is the joint that provides for the widest range of motion.
Examples:
shoulders
hips

21. socket
ball

24. hinge joints joints that move in a back-and-forth movement
joints that have a smaller range of motion and are not dislocated as easily
Examples:
knees
elbows
fingers

29. gliding joint
joints that have one part of a bone that slides over another bone
also called saddle joints
Examples:
Wrists (side to side)
Ankles (up and down)
Between vertebrae (both of the above)

30. Allows for some movement in all directions
Gliding joints are used the most in your body.

31. The flat surface of one bone glides over the surface of another bone next to it.

32. immovable joint a joint which allows little or no movement Examples:
skull
pelvis

37. immovable joint

43. Joint
Location
Type of Movement
Pivot
Twisting your forearm
Turning your head
one bone rotates in a ring of another bone that does not move
Ball-and-socket
hips
shoulders
a bone with a rounded end that fits into a cuplike cavity on another bone; allows for the widest range of movement

44. Joint
Location
Type of Movement
Hinge
knees
elbows
fingers
back-and-forth movement like hinges on a door (smaller range of motion and are not dislocated as easily, or pulled apart, as a ball-and-socket joint can be)
Gliding (or Saddle)
wrists
ankles
between vertebrae (bones of the spine)
one part of a bone slides over another bone (most used type in your body)
Im-movable
skull
pelvis
Don’t move

46. Skeletal System Functions: -supports the body -helps to move the body
-protects internal organs
-makes blood cells
-stores calcium and phosphorus

47. Skeletal System
Organs:
-bones
-cartilage
-ligaments
-tendons

48. osteoporosis
a condition where bones become weak and break easily due to the loss of minerals such as calcium