Question

These muscle fibres can be best described as _________

• A. striated, voluntary and skeletal
• B. unstriated, involuntary and skeletal
• C. unstriated, involuntary and visceral
• D. striated, voluntary and cardiac

Hint:

Smooth muscles help in movements like peristalsis and regulation of blood flow.

Answer 1

The Correct Option is C

Step 1: Observing the diagram.
The diagram shows spindle-shaped muscle fibres with a single centrally placed nucleus and no visible striations.

Step 2: Identifying muscle type.
Such muscle fibres are characteristic of smooth muscles, which lack striations and are involuntary in action.

Step 3: Location of these muscles.
Smooth muscles are found in the walls of visceral organs such as the intestine, stomach, and blood vessels.

Step 4: Conclusion.
Therefore, these muscle fibres are unstriated, involuntary, and visceral.