Smooth muscles are not:

The characteristic features of smooth muscle tissue are ..........

The following figures $A, B$ and $C$ are types of muscle tissue. Identify $A, B$ and $C$.

Smooth muscle fibres are:

Identify the location and function of the following structures:
$(i)$ Intercalated discs
$(ii)$ Haemoglobin

Assertion : Intercalated discs are important regions of cardiac muscle cells.
Reason : Intercalated discs function as boosters for muscle contraction waves.