The fascicles are short and attach obliquely to a central tendon that runs the length of a muscle.
Multipennate.
The Pennate arrangement. The fascicles attach obliquely to the tendon.
Pennate.
short fibers, arranged obliquely to their tendons
myofibril
Pennate MusclesIn a pennate muscle, the fascicles form a common angle with the tendon. Because the muscle cells pull at an angle, contracting pennate muscles do not move their tendons as far as parallel muscles do. But a pennate muscle contains more muscle fibers--and, as a result, produces more tension--than does a parallel muscle of the same size. (Tension production is proportional to the number of contracting sarcomeres; the more muscle fibers, the more myofibrils and sarcomeres.)
fascicle
The Fascicle
myofilament myofibril myofiber fascicle muscle
Strap
parallel
The organization of a skeletal muscle from smallest to largest is as follows: myofilaments > myofibrils > muscle fiber > fascicle > muscle