Muscles

Read the following statements.

1. Bands are dark bands and contain myosin
2. I bands are light bands and contain actin
3. During muscle contraction, the A band contracts.
4. The part between the two Z - lines is called a sarcomere.
5. The central part of the thin filament, not overlapped by the thick filament is called Hzone.

Of the above statements   

Draw the diagram of a sarcomere of skeletal muscle showing different regions.

Which one of the following statement is incorrect?

Myoglobin occurs in

Define sliding filament theory of muscle contraction.

Write true or false. If false, change the statement so that it is true:

Actin is present in thin filament

How do you distinguish between a skeletal muscle and a cardiac muscle?

Sarcolemma, sarcoplasm and sarcoplasmic reticulum refer to a particular type of cell in our body. Which is this cell and to what parts of that cell do these names refer to?