Question

Fill in the blanks.

$\begin{array}{cccc}& \text{Skeletal muscle}& \text{Smooth muscle}& \text{Cardiac muscle}\\ \text{Movement type}& \text{i.}\underset{–}{}& \text{Involuntary}& \text{Involuntary}\\ \text{Structure}& \text{ii.}\underset{–}{}& \text{Long cells with}& \text{iii.}\underset{–}{}\\ & & \text{pointed ends and}& \\ & & \text{uninucleate}& \end{array}$

• A. i - Involuntary, ii - Long, cylindrical, unbranched and multinucleated, iii - Cylindrical, branched and uninucleated.
• B. i - Voluntary, ii - Cylindrical, branched and uninucleated, iii - Long, cylindrical, unbranched and multinucleated
• C. i - Involuntary, ii - Cylindrical, branched and uninucleated, iii - Long, cylindrical, unbranched and multinucleated
• D. i - Voluntary, ii - Long, cylindrical, unbranched and multinucleated, iii - Cylindrical, branched and uninucleated.

Answer 1

The correct option is D i - Voluntary, ii - Long, cylindrical, unbranched and multinucleated, iii - Cylindrical, branched and uninucleated.

Skeletal muscles exhibit voluntary movements. The skeletal mucle cells are cylindrical, unbranched and multinucleated. Smooth muscles and cardiac muscles exhibit involuntary movements. Smooth muscle cells are spindle shaped and uninucleated, whereas cardiac muscle cells are cylindrical, branched and uninucleated.