| A | B |
|---|
| Bones | Composed mainly of calcium |
| Bones | Made up of living bone cells and connective |
| Bone Marrow | Produce red blood cells, white blood cells, and platelets |
| Joints | Where bone meets bone in an organism |
| Immovable Joint | Bones that are tightly fitted together |
| Ball-and-Socket Joint | Can move in all directions |
| Hinge Joint | Permits back and forth motion |
| Gliding Joint | Provides limited flexibility in all directions |
| Cartilage | Unlike bone, cartilage is flexible and elastic and functions to absorb shock |
| Ossification | The process by which cartilage gradually changes into bone |
| Skeletal Muscle | Are voluntary, striated in appearance, attached to bone, and is involved in locomotion |
| Smooth Muscle | Are involuntary, not striated in appearance, and make up the walls of internal organs and blood vessels |
| Cardiac Muscle | Are involuntary, striated in appearance, and found in the heart |
| Ligaments | Connect bone to bone |
| Tendons | Connect muscle to bone |
| Arthritis | Inflammation of the joints |
| Tendonitis | Inflammation of a tendon, usually where it is attached to the bone |
