Q:
What is the difference between fast-twitch and slow-twitch muscles?
A:
Quick Answer
Fast twitch and slow twitch muscles are types of muscle fiber used to perform different kinds of physical activity. For example, slow twitch muscles in the lower leg aid in standing, while fast twitch muscles in the eyelid enable blinking.
Continue ReadingFull Answer
Slow twitch muscles have the capacity to work for a long time while tiring slowly, so they are used in endurance activities such as walking and marathon running. Because these muscles use oxygen as fuel, they are red in color. Fast twitch muscles tire quickly because they consume energy at a high rate and make sprinting, jumping and other explosive movements possible. These muscles are anaerobic and are lighter in color.
Learn more about MusclesRelated Questions
-
Q:
What is each muscle fiber called?
A: An individual muscle fiber may also be called a myofiber or a muscle cell. Each muscle fiber is a single, narrow cell that spans the entire length of a mus... Full Answer >Filed Under: -
Q:
What are the contractile proteins within muscles?
A: The contractile proteins in muscles are myofibrils. Myofibrils are bundles of both thick and thin fibers that have a cylindrical appearance. Full Answer >Filed Under: -
Q:
What role does ATP play in muscle contraction?
A: According to the Fayette County Public Schools, the breakdown of adenosine triphosphate (ATP) in a chemical reaction with water provides energy for skeleta... Full Answer >Filed Under: -
Q:
How many skeletal muscles are in the human body?
A: There are nearly 700 skeletal muscles in the human body. The precise number varies because not all scientists agree about what constitutes a separate count... Full Answer >Filed Under:
