[Answer] Both actin and myosin are found in the _______band.

Answer: A
Both actin and myosin are found in the _______band.
The parts of the A band that abut the I bands are occupied by the both actin and myosin filaments (where they interdigitate as described above). Also within the A band is a relatively brighter central region called the H-zone (from the German helle meaning bright) in which there is no actin / myosin …
The sarcomeres are what give skeletal and cardiac muscles their striated appearance which was first described by Van Leeuwenhoek. • A sarcomere is defined as the segment between two neighbouring Z-lines (or Z-discs or Z bodies). In electron micrographs of cross-striated muscle the Z-line (from the German “Zwischenscheibe” the disc in between the I bands) appears as a series of dark lines. They act as an anchoring point of the actinfilam…
Sliding filament theory – Wikipedia
Sarcomere – Wikipedia
Sarcomere – Wikipedia
Myosin – Wikipedia
Myosin and actin form overlapping filaments myosin filaments mainly constituting the A band (the dark region of a sarcomere) while actin filaments traverse both the A and I (light region) bands. Huxley was the first to suggest the sliding filament theory in …
Function. Troponin is attached to the protein tropomyosin and lies within the groove between actin filaments in muscle tissue. In a relaxed muscle tropomyosin blocks the attachment site for the myosin crossbridge thus preventing contraction.When the muscle cell is stimulated to contract by an action potential calcium channels open in …

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