Patterns of Muscle Fascicle Arrangement

What pattern of muscle fascicle arrangement is this?

Fusiform

• Key Features: large cross-sectional area; The more muscle force it can produce and taper on either end into a tendons attachment

• EX: Bicep Brachii

What pattern of muscle fascicle arrangement is this?

• Parrell

• Key Features: Not going to be as strong usually fatigue resistant

• EX: Rectus Abdominus

What pattern of muscle fascicle arrangement is this?

• Triangular

• Key Features: AKA convergent muscles; these are going to have a really broad origin point and come and taper into a single tendon

• EX: Pec Major

What pattern of muscle fascicle arrangement is this?

• Unipennate

• Key Features: Have tendon that comes across one side of a muscle and the fibers are going to insert at an angle.

• EX: Palmaris Interosseous

What pattern of muscle fascicle arrangement is this?

• Bipennate

• Key Features: Also strong not as strong as triangular or convergence has single tenson coming up through the center and have muscle EX: Rectus Femoris

What pattern of muscle fascicle arrangement is this?

• Multipennate

• Key Features: Several tendons coming through and all the fibers coming down and converging; strong produce a lot of force

• EX: Deltoid

What pattern of muscle fascicle arrangement is this?

• Circular

• Key Features: AKA sphincters; see them surrounding opening for the body; also have orbicular Boris also have sphincters etc

• EX: Orbicularis Oculi