The units of contraction called sarcomeres give striated muscle this appearance. Smooth muscle also has sarcomeres but they are not as neatly arranged so they appear smooth.
Intercalated discs and striations suggest the presence of cardiac muscle. Only cardiac muscle has intercalated discs. Both skeletal and cardiac muscle have striations.
Smooth Muscle
Yes they do lack striations. They do not have striations because they do not have sarcomeres. Instead, smoothe muscle contracts as one unit through the use of electrical impulses.
Of the three types of muscle, cardiac, smooth and skeletal, skeletal is striated. Myocytes form myoblast which form myofibers. The myofibers are composed of myofibrils which are comprised of sarcomeres which is responsible for the muscles striated appearance.
Yes, they are. While skeletal muscles are arranged in regular, parallel bundles, cardiac muscle connects at branching, irregular angles. Anatomically, the muscle fibers are typically branched like a tree branch. In addition, cardiac muscle fibers connect to other cardiac muscle fibers through intercalcated discs and form the appearance of a syncytium (continuous cellular material). These intercalcated discs, which appear as irregularly-spaced dark bands between myocytes (muscle cells), are a unique feature of cardiac muscle .
Striations are light and dark bands on skeletal and caridac muscle fibers. Smooth muscle lacks striations
Skeletal muscle is one of the three types of muscle and it is a structure of a striated muscle tissue. The muscle is made up of myocytes or muscle fibers.
What type of embryological cell gives rise to muscle fibers
The "stripes" in the muscle are called striations. Smooth muscle doesn't have the striations.
Smooth muscle contains no striations whereas cardiac and skeletal muscles are striated.
Intercalated discs and striations suggest the presence of cardiac muscle. Only cardiac muscle has intercalated discs. Both skeletal and cardiac muscle have striations.
The striations seen in skeletal muscle fibers are the result of the alignment of hundreds of myofibrils within each muscle fiber. A myofibril is a cylindrical organelle as long as the muscle fiber. Myofibrils contain bundles of myofilaments, which are actin proteins and myosin proteins. The differences in the thicknesses of the myofilaments accounts for the banding pattern of light and dark striations.
Skeletal Muscle (as well as Cardiac Muscle) have striations do to their sarcomere's anatomy. The sarcomere is the functional unit of the muscle and appears striated because the different thick and thin filaments present.
Smooth Muscle
Cross-striations form cardiac muscle. The crossed formation makes the tissue and muscle stronger.
smooth
Both cardiac and skeletal muscle cells are striated and contract by the sliding filament mechanism. However, cardiac muscles cells are short, fat, branched, and interconnected unlike the long, cylindrical, multinucleate of skeletal muscle fibers.