MUSCLE PHYSIOLOGY

Detailed explanation-1: -Type I Slow Twitch Oxidative Slow oxidative fibres contract relatively slowly and use aerobic respiration (oxygen and glucose) to produce ATP. They produce low power contractions over long periods and are slow to fatigue.

Detailed explanation-2: -Type 1 (“slow twitch”) fibers contain more mitochondria, which means they can produce more energy and are better for long, aerobic activities. Type 2 (“fast twitch”) fibers, on the other hand, are suited for short, fast bursts of activity that don’t require as much oxygen.

Detailed explanation-3: -1, that the larger type I fibers would have relatively low oxidative capacities compared to the IIA fibers. Based on the current literature, it is generally safe to conclude that both type I and IIA fibers have a relatively large oxidative capacity and small fiber size compared to type IIB/IIX fibers.

Detailed explanation-4: -Answer and Explanation: (a) The muscle type that is slow to contract is smooth muscle. It is known to produce slow contractions because the smooth muscle has calcium channels which open much more slowly that other muscles.