It was this accumulation of grievances that led to the burst of the Mongol attack on Islamdom from 1200 that culminated in the sack and slaughter at Baghdad in 1258 under Hulagu Khan who was egged on to this path by his Nestorian Persian Christian wife.
Type IIx are best known as fast-twitch muscle fibers. These are the muscle fibers primarily responsible for fast, explosive movements like sprinting. However, they lack the endurance-boosting ability of slow-twitch fibers and can only be used for short periods of time.Type IIa are what we call intermediate fibers. These are a blend between fast-and slow-twitch fibers.hese are the muscle fibers primarily responsible for fast, explosive movements like sprinting. However, they lack the endurance-boosting ability of slow-twitch fibers and can only be used for short periods of time. Type IIa are what we call intermediate fibers.
Their major function is to give strength to the body and support it; they also produce movements. There are three major categories of muscles; Skeletal muscles Cardiac muscles, and Smooth muscles. These muscles are made up of muscular fibers. Muscle fibers are of two kinds: striated muscle fibers and non-striated muscle fibers. Muscles that contain striated muscle fibers are called striated muscle and muscles that contain non-striated muscle fibers are called non-striated muscles. The difference between striated and non-striated muscles is that in striated muscles, the contractile fibrils are aligned parallel, and their regions form stripes that are easily visible under a microscope, whereas non-striated muscles do not have stripes on them, they give a poor appearance under the microscope.