What are Pennate and Nonpennate muscles?
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. If the central tendon branches within a pennate muscle, the muscle is called multipennate.
What muscles are parallel muscles?
Most skeletal muscles in the body are parallel muscles; although they can be seen in a variety of shapes such as flat bands, spindle shaped, and some can have large protrusions in their middle known as the belly of the muscle. Parallel muscles can be divided into fusiform and non-fusiform types based on their shape.
Is the bicep a Bipennate muscle?
The biceps femoris is a fusiform muscle comprising two heads: long and short.
What does Bipennate mean?
: having the fibers arranged obliquely and inserting on both sides into a central tendon The biceps brachii is a bipennate muscle with two heads of origin.—
Why are Pennate muscles stronger than parallel?
The fibers of these muscles are shorter and are situated at an angle to the long axis of the muscle. Thus, if two muscles were of equal cross-sectional area, a pennate muscle would be stronger than a parallel fibered one because of its larger physiological cross-sectional area.
Is Pennate stronger than fusiform?
Pennate muscles are better designed for higher force production. Fusiform muscles have more muscles in series. Recall, all sarcomeres shortent at same rate. Fusiform fibers shorten across a longer distance = higher velocity.
What connects muscle to bone?
Tendons: Tendons connect muscles to bones. Made of fibrous tissue and collagen, tendons are tough but not very stretchy.
What are examples of Multipennate muscles?
A type of pennate muscle wherein the diagonal muscle fibers are in multiple rows with the central tendon branching into two or more tendons. Example of multipennate muscle is deltoid muscle.