Type 2 (fast twitch) muscle fibers - type A: b. muscle fibers that help with a long sprint or carry a heavy object a short distance
muscular strength: d. the muscle's capacity to exert force against resistance
Type 1 (slow twitch) muscle fibers: a. muscle fibers responsible for endurance
Muscle endurance: c. refers to the ability to perform a specific muscular action for a prolonged amount of time.
Type 2 (fast twitch) muscle fibers - type B: e. muscle fibers used in short explosive movements such as jumping or lifting a very heavy weight one or two times.
Explanation:
Types of Skeletal Muscles:
Skeletal muscle are divided into two types:
Slow Twitch (Type 1)
Fast Twitch (Type 2)
Slow twitch muscles are the first ones to contract at times of exercise of strenuous physical activity. A compared to fast twitch muscle fibers, they contract slowly but can sustain contraction for a long time.
Fast twitch muscle fibers are divided into two subtypes: Type 2A and Type 2B.
Type 2A muscle fibers produce a high amount of force but they fatigue rapidly.
Type 2B muscle fibers, fire last, produce the most amount of force but wear out very rapidly.
Muscle Characteristics:
Muscle endurance is the muscle's ability to contract with force against a resistance for a prolonged time period.
Muscle strength is a measure of the amount of force a muscle can produce against resistance.
