Choose best answer 1. True statements about the capacity of the different fiber
ID: 3523979 • Letter: C
Question
Choose best answer
1. True statements about the capacity of the different fiber types to hypertrophy in response to training include the following:
a. Both types of fiber hypertrophy, but type II fibers have greater potential for hypertrophy than type I.
b. Both types of fiber hypertrophy, but type I fibers have greater potential for hypertrophy than type II.
c. Only type II fibers hypertrophy in response to training.
d. Only type I fibers hypertrophy in response to training.
2. Type IIa skeletal muscle fibers have:
a. fast twitch speed, high glycolytic capacity, and high oxidative capacity
b. fast twitch speed, high glycolytic capacity, and low oxidative capacity
c. fast twitch speed, low glycolytic capacity, and high oxidative capacity
d. slow twitch speed, low glycolytic capacity, and high oxidative capacity
3. True statements about converting skeletal muscle fibers from one type to another as the result of exercise training include the following:
a. It is easy to change from one type to another.
b. It is very difficult to change from one type to another.
c. It is easy to change type I fibers to type II, but difficult to change type II to type I.
d. It is easy to change type II fibers to type I, but difficult to change type I to type II.
4. Most of the requirement for ATP hydrolysis during muscle contraction is accounted for by:
a. calcium pumping by the SR
b. the sodium-potassium pump
c. crossbridge cycling
d. none of these
Explanation / Answer
1.(A) Type II fibre has greater potential for hypertrophy.
2.(B) fast twitch fibres because of Mitochondria use anaerobic respiration.
3(D) type 1 muscle fibres contract slowly to produce large amount of energy slowly.
4(A) buy calcium pumping of sarcoplasmic reticulum in muscles.