Farmers Insurance Group is a leading personal lines insurer in the United States, with a particularly strong market position in. the West and Southwest. The ultimate parent of Farmers' attorney-in-fact (Farmers Group, Inc.), Zurich Insurance Group. Limited, is one of the largest insurers in the world.
Within skeletal muscle there are three types of fiber. Type one (I), type two A (IIa) and type two B (IIb). Each fiber types has different qualities in the way they perform and how quickly they fatigue. Type I fibers are also known as slow twitch fibers. They are red in colour due to the presence of large volumes of myoglobin and so oxygen and high numbers of Mitochondria.
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).