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Contractile fibers are specialized muscle fibers responsible for the contraction and movement of muscles. They contain proteins like actin and myosin, which interact to produce force during muscle contraction. These fibers are found in various types of muscle tissue, including skeletal, cardiac, and smooth muscle, each serving distinct functions in the body. Their ability to contract and relax is essential for various bodily movements and functions.
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Tiny contractile fibers that are within the cell?
Those are likely myofibrils, which are made up of repeating units called sarcomeres and are responsible for muscle contraction. Sarcomeres contain thin filaments (actin) and thick filaments (myosin) that slide past each other during contraction.
What organelle helps move excess water?
A specific type of vacuole, called a contractile vacuole expels excess water from many fresh water protists.
Name four factors that influence contractile force and two that influence velocity and duration of contraction?
The four factors that influence contractile force are the number of muscle fibers stimulated, the relative size of the fibers, the frequency of stimulation and the degree of muscle stretch. Factors that influence the velocity and duration of contraction are the muscle fiber type, load and recruitment.
Contractile proteins are found in what?
Muscles
What are muscle fibers that contains many bundles of cylindrical structure called?
Muscle fibers that contain many bundles of cylindrical structures are called myofibrils. Myofibrils are the contractile units within muscle fibers that are composed of repeating units called sarcomeres. Sarcomeres are responsible for muscle contractions by sliding past each other during the contraction process.
What is the contractile organelle of skeletal muscle fibers is?
myofibrils
Contractile and non-contractile heart muscles?
The non-contractile element are skeletal muscles that don't contract such as Epimysium,Perimysium and, Endomysium. Contractile muscle contract as a whole muscle instead of single bundles of muscle fibers
What three fibers types produces the greatest contractile force?
Type IIx, Type IIa, and Type I fibers are typically known to produce the greatest contractile force among muscle fibers. Type IIx fibers are fast-twitch fibers that generate high force but fatigue quickly, while Type IIa fibers are also fast-twitch but have more endurance. Type I fibers, on the other hand, are slow-twitch fibers with lower force production but high resistance to fatigue.
What are actin fibers?
Actin is a contractile protein fibers present in muscles.It occurs in two forms a.monomeric G actin b. polymeric F ACTIN.
Tiny contractile fibers that are within the cell?
Those are likely myofibrils, which are made up of repeating units called sarcomeres and are responsible for muscle contraction. Sarcomeres contain thin filaments (actin) and thick filaments (myosin) that slide past each other during contraction.
Smallest contractile unit individual muscle fibers?
The smallest contractile unit of individual muscle fibers is called a sarcomere. Sarcomeres are made up of overlapping thick and thin filaments that slide past each other during muscle contraction, generating the force necessary for movement.
Do skeletal muscle fibers contain sarcomeres whereas smooth muscle fibers do not?
Yes, skeletal muscle fibers contain sarcomeres, which are the repeating units responsible for muscle contractions. In contrast, smooth muscle fibers do not have sarcomeres in the same organized structure but still have contractile proteins.
What is the importance of myosin in the body?
Muscles are a type of tissue composed of contractile cells or fibers that effect MOVEMENT of a part of the human body,that allows you to move your body... :)
What is the difference between fast twitch and slow twitch muscle fibers?
Fast twitch muscle fibers are Type II muscle fibers. These muscle fibers have high explosive power and are anaerobic. They have a fast contractile speed and can reach peak tension in 50ms. They have a high glycolytic capacity and have low to moderate resistance to fatigue. Their motor unit strength is high.Slow twitch muscle fibers are Type I muscle fibers. These muscle fibers have steady power and are aerobic. The have a slow contractile speed and needs 110ms to reach peak tension. They have a low glycolytic capacity and a high resistance to fatigue. Their motor unit strength is low.
What has a contractile properties?
a contractile vacuole
What organelle helps move excess water?
A specific type of vacuole, called a contractile vacuole expels excess water from many fresh water protists.
Name four factors that influence contractile force and two that influence velocity and duration of contraction?
The four factors that influence contractile force are the number of muscle fibers stimulated, the relative size of the fibers, the frequency of stimulation and the degree of muscle stretch. Factors that influence the velocity and duration of contraction are the muscle fiber type, load and recruitment.
