1. Attachment of muscles
Muscles are attached to bones or other structures either directly or indirectly

2. Direct/Indirect attachment
Direct--Epimysium of muscle is fused to bone or cartilage Indirect—muscle fascia extends beyond the muscle as a tendon and connects to either bone, cartilage, or fascia of another muscle

3. Arrangement of Fascicles
The way the muscles are arranged influences the range of motion and the amount of power
Power is dependent on the number of muscle cells being used
Muscle fibers can shorten to about ½ their length
Longer muscle fibers in the direction of the muscle axis allow for a greater range of motion

4. Parallel arrangement
Long axis of the fascicle runs with the longitudinal axis of the muscle
Ex—strap-like muscles of the biceps

5. Pennate attachment
Muscle fibers are short and fascicles are attached at an angle to a central tendon running the length of the muscle
Unipennate—one side
Bipennate—both sides

6. Convergent attachment
Broad origin and fascicles converge (come together) toward a central tendon-example is the pectoralis major

7. Circular arrangement Fascicles form a circle around muscle fibers
Ex—muscles around eyes and mouth