Quick Answer: Which Of The Following Statements About The Microscopic Anatomy Of Skeletal Muscle Fibers Is False?

Which statement about the microscopic anatomy of skeletal muscle fibers is true?

Which statement about the microscopic anatomy of skeletal muscle fibers is true? Muscle fibers are continuous from tendon to tendon, Tubular extensions of the sarcolemma penetrate the fiber transversely, Cross striations result from the lateral alignment of thick and thin filaments, Each fiber has many nuclei.

What are the microscopic structures of skeletal muscle?

Skeletal muscle cell showing thick and thin protein filaments and the sarcomere where they overlap. Unlike other tissue, skeletal muscle cells contain myofibrils – these are shaped like long cylinders and extend along the full length of the muscle fibre/cell.

How the skeletal muscle fiber differs from a typical body cell?

Skeletal muscle cells ( fibers ) are very different from typical cells. The long fibers develop through the fusion of mesodermal cells (myoblasts) until they become very large and contain hundreds of nuclei.

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Which of the following is not a function of skeletal muscle tissue?

Option D:production of body heat: The skeleton serves six major functions: support, movement, protection, production of blood cells, storage of minerals and endocrine regulations. Hence, production of body heat is not a function of the skeletal system. Thus, the answer is option D:Production of body heat.

Which of the following is recognized function of skeletal muscle?

Skeletal muscles are responsible for the pumping action of the heart. The advantage of having many nuclei in a skeletal muscle fiber is the ability to: produce large amounts of the muscle proteins needed for muscle contraction.

What is the plasma membrane of skeletal muscle cells called?

Muscle Fiber A skeletal muscle fiber is surrounded by a plasma membrane called the sarcolemma, which contains sarcoplasm, the cytoplasm of muscle cells.

What is an example of skeletal muscle?

Examples of Skeletal Muscle Below are the examples of the skeletal muscle: Arms and Legs- The muscles which belong to the arms and legs do their work in pairs. Abdomen and Back- These muscles refer to the various sets of skeletal muscles that run along the torso. Moreover, this is for both the front and the back.

What do skeletal muscle cells look like?

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. They are called involuntary muscles.

What is unique about skeletal muscle?

Unlike smooth muscle and cardiac muscle, skeletal muscle is under voluntary control. Similar to cardiac muscle, however, skeletal muscle is striated; its long, thin, multinucleated fibres are crossed with a regular pattern of fine red and white lines, giving the muscle a distinctive appearance.

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What are the 3 types of skeletal muscle fibers?

The three types of muscle fibers are slow oxidative (SO), fast oxidative (FO) and fast glycolytic (FG).

What are the components of a skeletal muscle?

A whole skeletal muscle is considered an organ of the muscular system. Each organ or muscle consists of skeletal muscle tissue, connective tissue, nerve tissue, and blood or vascular tissue. Skeletal muscles vary considerably in size, shape, and arrangement of fibers.

Which would be the correct order for skeletal muscle contraction?

So, Correct answer is ‘Stimuli Neurotransmitter secretion →→ Excitation of T-system →→ Release of Ca2+ →→ Cross-bridges formation →→ Sliding of actin filaments →→ H band diminishes’

Which action would be completed by skeletal muscle tissue quizlet?

Which action would be completed by skeletal muscle tissue? To raise an arm upward, the muscle on one side of it contracts.

What are the function of skeletal?

The skeletal system works as a support structure for your body. It gives the body its shape, allows movement, makes blood cells, provides protection for organs and stores minerals.

Do skeletal muscles generate heat?

Producing heat Skeletal muscle accounts for at least 40% of body mass and is the muscle type responsible for generating most body heat.

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