What is a sarcomere?

The functional unit of the contractile system for a striated muscle is:

The sliding filament theory to explain muscular contraction was given by

The largest number of muscles in the human body is found in which region?

During the mechanism of muscle contraction,$Ca^{2+}$ binds with which of the following?

$A$: Muscle tetanus is the phenomenon of sustained contraction of a muscle due to a succession of nerve impulses/stimuli being received by it.
$R$: Many of our daily activities are due to tetanic contraction of muscles,such as holding a book.