MYOFIBRILLAE Meaning and
Definition
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Myofibrillae are microscopic cylindrical structures found within muscle fibers that play a crucial role in muscle contraction and movement. They are composed of repeated contractile units called sarcomeres, which are responsible for the contraction of striated muscles, including skeletal and cardiac muscles.
The myofibrillae are specialized bundles of protein filaments that give muscles their distinctive striated appearance. They consist of two main types of protein filaments: thick filaments made up of myosin and thin filaments primarily composed of actin. These proteins are arranged in a highly organized pattern within the myofibrillae, giving rise to the characteristic striations observed in muscle tissue.
The interaction between the thick and thin filaments is what enables muscle contraction. When a muscle is stimulated, the myosin heads of the thick filaments bind to the actin filaments, causing them to slide past each other. This sliding action shortens the sarcomeres and ultimately leads to muscle contraction.
The myofibrillae also contain numerous other proteins, including tropomyosin and troponin, which regulate the interaction between myosin and actin. These proteins are pivotal in coordinating the contraction and relaxation of muscles.
Overall, myofibrillae are essential structural components of muscle fibers and are crucial for muscle function. They provide the structural framework and molecular machinery necessary for muscles to generate force, enabling movements such as walking, lifting weights, and even the beating of the heart.
Common Misspellings for MYOFIBRILLAE
- myofibrillas
- myofibrilas
- nyofibrillae
- kyofibrillae
- jyofibrillae
- mtofibrillae
- mgofibrillae
- mhofibrillae
- muofibrillae
- m7ofibrillae
- m6ofibrillae
- myifibrillae
- mykfibrillae
- mylfibrillae
- mypfibrillae
- my0fibrillae
- my9fibrillae
- myodibrillae
- myocibrillae
- myovibrillae
Etymology of MYOFIBRILLAE
The word "myofibrillae" is derived from two parts: "myo-" and "fibrillae".
The prefix "myo-" comes from the Greek word "mys" (μυς), which means "muscle". This prefix is commonly used in words related to muscles, such as "myology" (study of muscles), "myopathy" (muscle disease), and "myocardium" (the muscular tissue of the heart).
The term "fibrillae" is the plural form of the Latin word "fibrilla", which means "little fiber" or "small thread". It is a diminutive form of "fibra", which means "fiber" in Latin. "Fibrilla" is commonly used in medical terminology to refer to small, thread-like structures or fibers.
Similar spelling words for MYOFIBRILLAE
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