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pennate is the opposite of parallel (fusiform) parallel muscle eg biceps brachii has fibres which run parallel, whereas pennate fibres run diagonally to the axis of movement, unipennate, bipennate and multipennate refers to the number of tendonous attachments unipennate muscle fibers which converge on one side of a tendon ca be found in the gluteus maximus, bipennate fibers converge in a featherlike way towards a central tendon, and multipennate converge on more tendons such as deltoid which has three heads.
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What is a pennate muscle?
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.)
What kind of pennate muscle is the vastus intermedius?
Strap
Is the adductor magnus a parallel or pennate muscle?
parallel
Is the adductor longus parallel or pennate?
parallel
A muscle in which the fibers are arranged at an angle to a central longitudinal tendon has a arrangement?
Pennate.
Describe fascicle arrangement in a pennate muscle?
The fascicles are short and attach obliquely to a central tendon that runs the length of a muscle.
Where are unipennate muscles located and what do they do?
Unipennate is not a muscle but a pennate is a muscle. This muscle is located throughout the human body that allows high force production but little motion.
What muscle arrangement fibers run tangentially or feather?
The Pennate arrangement. The fascicles attach obliquely to the tendon.
What is the muscle fiber arrangement in a pennate muscle?
short fibers, arranged obliquely to their tendons
Describe the differences between a fusiform and pennate muscle?
In non pennate or fusiform structure, fibers run in line with the line of pull. There is a longer fiber length associated with a fusiform structure, but often not a very thick cross-section -Weaker overall, but greater ROM (range of movement) making it good for speed In a pennate or penniform muscle structure, there is an oblique fiber pattern. Fibers do not pull in the same direction as the line of muscle pull. There is a shorter fiber length but usually a thicker cross sectional area. -There are three pennate types 1) Unipennate: One-sided feather such as in the semimembranous 2) Bipennate: Two-sided feather such as in the gastrocnemius 3) Multipennate: many-headed two sided feather such as in the deltoids -Good for strength, smaller ROM, meaning it is not as great for speed
What is the definition of Target muscle?
The primary muscle intended for exercise.
Is the infraspinatus a pennate fiber arrangement?
yes
