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 I muscle fiber is also known as slow twitch oxidative fibers. Muscle fiber types can be broken down into two main types: slow twitch (Type I) muscle fibers and fast twitch (Type II) muscle fibers.Type I fibers are used in lower-intensity exercises such as very light resistance work aimed at muscular endurance and long-duration aerobic activities such as 5K and 10K runs.ype II muscle fiber is also known as fast twitch muscle fibers. These fast twitch fibers can be further categorized into Type IIa and Type IIx fibers, which are also known as fast twitch oxidative and fast twitch glycolytic, respectively.
For example, the force of muscle contraction required to lift a 5 kg weight is less than the force required to lift a 25 kg weight, and the effort of muscles used in walking on level ground is less than the effort those same muscles expend in climbing stairs.ach muscle fiber is supplied by a single motor nerve fiber that initiates and controls the contraction of the muscle fiber. One motor nerve fiber controls several muscle fibers simultaneously. The motor nerve fiber and all of the muscle fibers it controls is called a motor unit (Fig. 1.1).