Search results
Results from the WOW.Com Content Network
A pennate or pinnate muscle (also called a penniform muscle) is a type of skeletal muscle with fascicles that attach obliquely (in a slanting position) to its tendon. This type of muscle generally allows higher force production but a smaller range of motion. [1] [2] When a muscle contracts and shortens, the pennation angle increases. [3]
Some types of muscle architecture. Parallel and pennate (also known as pinnate) are two main types of muscle architecture. A third subcategory, muscular hydrostats, can also be considered. Architecture type is determined by the direction in which the muscle fibers are oriented relative to the force-generating axis. The force produced by a given ...
It is typically used to describe the contraction properties of pennate muscles. [1] It is not the same as the anatomical cross-sectional area (ACSA), which is the area of the crossection of a muscle perpendicular to its longitudinal axis. In a non-pennate muscle the fibers are parallel to the longitudinal axis, and therefore PCSA and ACSA coincide.
The muscle architecture of pennate muscles, such as the human quadriceps, is highly plastic and strongly influences contractile properties. [6] Changes to pennate muscle architectural properties, such as pennation angle and thereby the PCSA, can alter the muscle's force-producing capabilities as well as the AGR at which the muscle operates.
Muscle types by fiber arrangement Types of pennate muscle. A – unipennate; B – bipennate; C – multipennate. Muscle architecture refers to the arrangement of muscle fibers relative to the axis of force generation, which runs from a muscle's origin to its insertion. The usual arrangements are types of parallel, and types of pennate muscle.
The muscle which can 'cancel' or to some degree reverse the action of the muscle. Muscle synergies are noted in parentheses when relevant. O (Occurrences) Number of times that the named muscle row occurs in a standard human body. Here it may also be denoted when a given muscles only occurs in a male or a female body.
Crunchy, tasty and delicious mixed into almost anything, nuts are one of the best ways to get plant-based protein (a 1-oz serving of peanuts, for example, has around 7.3 g of protein and 2.4 g of ...
Muscle fibers can only contract up to 40% of their fully stretched length. [citation needed] Thus the short fibers of pennate muscles are more suitable where power rather than range of contraction is required. This limitation in the range of contraction affects all muscles, and those that act over several joints may be unable to shorten ...