Question

Pennation angle affects the ____ as well as the _____ of a muscle. a. Force production...

Pennation angle affects the ____ as well as the _____ of a muscle.

a.

Force production capabilities; range of motion
b.

Cross-sectional area; fiber type
c.

Hypertrophy; hyperplasia
d.

Fatigue resistance; myelination
Science   Anatomy-And-Physiology   
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Answer #1

Ans:- a)Force production capabilities; range of motion .

Concept:- pennation angle is the angle at which muscle fibers are attach to the longitudinal axis of muscle.

Pennation of muscle help to create greater force of contraction in comparison to parallel muscle fibers arrangement because.pennate muscle fibers pull at an angle to the tendon, this type of muscle does not move its tendons as far as parallel muscles move their tendons. However, the contraction of a pennate muscle generates more tension than does a parallel muscle of the same size, and thus it is stronger.

Pennation also help to increase range of motion by changing the angle between longitudinal axis of entire muscle fiber and its fibers.

All other options are wrong for pennation angle.

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