ANATOMY
MUSCULOSKELETAL AND SOFT TISSUE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Unipennate muscles have fibres running down one side of the tendon eg Gastrocnemius
|
|
|
Bipennate muscles have fibres running down three sides of a tendon eg Quadricep
|
|
|
Multipennate muscles have fibres branching out from several tendons eg Deltoid
|
|
|
Multipennate muscles enables the body to produce the most force
|
Detailed explanation-1: -In pennate muscles, fibers are oriented at an angle to the muscle’s line of action and rotate as they shorten, becoming more oblique such that the fraction of force directed along the muscle’s line of action decreases throughout a contraction.
Detailed explanation-2: -If all the fascicles of a pennate muscle are on the same side of the tendon, the pennate muscle is called unipennate. If the fascicles lie to either side of the tendon the muscle is called bipennate.
Detailed explanation-3: -One advantage of pennate muscles is that more muscle fibers can be packed in parallel, thus allowing the muscle to produce more force, although the fiber angle to the direction of action means that the maximum force in that direction is somewhat less than the maximum force in the fiber direction.