Table of Contents
- 1 Why do muscle cells have multiple nuclei?
- 2 How do muscle cells become Multinucleate quizlet?
- 3 What is multinucleated cells?
- 4 How do multinucleated cells function?
- 5 Which muscle cells are multinucleated?
- 6 How a skeletal muscle fiber develops from a myoblast?
- 7 Why do skeletal muscle cells have so many nuclei?
- 8 Why are there so many mitochondria in muscle cells?
Why do muscle cells have multiple nuclei?
Skeletal muscle cells are multinucleated because during prenatal development, several cells fuse together to create each developed muscle cell (hence the presence of several nuclei).
How do muscle cells become Multinucleate quizlet?
skeletal muscle fibers become multi-nucleated when embryonic cells called myoblasts fuse to form a synctytium, a cell with many nuclei. the resulting muscle fiber is a large, elongated multi-nucleated cell.
Why the human muscle cell is known as multinucleated cells?
Answer: Multinucleate cells (multinucleated or polynuclear cells) are eukaryotic cells that have more than one nucleus per cell, i.e., multiple nuclei share one common cytoplasm.
What is the embryological basis for why skeletal muscle cells are multinucleated?
As a myotube is formed from many different myoblast cells, it contains many nuclei, but has a continuous cytoplasm. This is why skeletal muscle cells are multinucleate, as the nucleus of each contributing myoblast remains intact in the mature skeletal muscle cell.
What is multinucleated cells?
Multinucleate cells (multinucleated or polynuclear cells) are eukaryotic cells that have more than one nucleus per cell, i.e., multiple nuclei share one common cytoplasm. For example, slime molds have a vegetative, multinucleate life stage called a plasmodium.
How do multinucleated cells function?
Multinucleated giant cells are important mediators of tissue remodeling and repair and are also responsible for removal or sequestration of foreign material, intracellular bacteria and non-phagocytosable pathogens, such as parasites and fungi.
Why are skeletal muscle cells multinucleated quizlet?
Skeletal muscle cells are multinucleated because they consist of several cells that have fused together. Muscle cells contain many mitochondria and the characteristic protein filaments (myosin and actin) which are responsible for the muscle contraction.
Is smooth muscle cell multinucleated?
Muscle tissue can be categorized into skeletal muscle tissue, smooth muscle tissue, and cardiac muscle tissue. Skeletal muscle fibers are cylindrical, multinucleated, striated, and under voluntary control. Smooth muscle cells are spindle shaped, have a single, centrally located nucleus, and lack striations.
Which muscle cells are multinucleated?
Skeletal muscle fibers are cylindrical, multinucleated, striated, and under voluntary control. Smooth muscle cells are spindle shaped, have a single, centrally located nucleus, and lack striations.
How a skeletal muscle fiber develops from a myoblast?
A myoblast is a type of embryonic progenitor cell that differentiates to form muscle cells. Skeletal muscle fibers are made when myoblasts fuse together, so muscle fibers have multiple nuclei. The fusion of myoblasts is specific to skeletal muscle (e.g., biceps brachii), not cardiac or smooth muscle.
How are myocytes formed?
Muscle cell differentiation begins with the conversion of mesodermal precursor cells into single-cell myoblasts, which then fuse to form myocytes. Further fusion of the myocytes produces multinucleate myotubes.
What causes multinucleated giant cells?
MULTINUCLEATED giant cells (MGC) are a common feature of granulomas that develop during certain infections, the most prominent example being tuberculosis, or as a consequence of foreign body reactions.
Why do skeletal muscle cells have so many nuclei?
Muscle cells and muscle fibers have many nuclei because these cells arise from a fusion of myoblasts. Before being fused the myoblasts each have their own nucleus. The muscle fibers in skeletal muscle also contain a large concentration of mitochondria to produce energy for the muscles to move.
Why are there so many mitochondria in muscle cells?
Muscle cells contain many mitochondria because muscle burn more energy so the cells need more mitochondria to make more energy.
Why do muscle cells contain more mitochondria than fat cells?
Muscle cells require more energy than fatthe cells. Muscles have to constantly do work by contracting. Mitochondria produce the ATP needed for such work to be done. The main function served by fat cells is fat storage, which does not consume as much energy. Thus fat cells do not need as much mitochondria.
Which muscle cells have the ability to regenerate?
Skeletal muscles are the muscles that increase and strengthen with exercise, cardiac muscles keep the heart beating and smooth muscles line the hollow or tube-like organs of the body. Skeletal muscles have some ability to regenerate and form new muscle tissue, while cardiac muscle cells do not regenerate.