Correct Option
The correct option is (c) 2 and 3 only.
Explanation
Muscular tissues in animals are classified into three types based on their structure, location, and function: Skeletal (Striated), Smooth (Non-striated), and Cardiac muscles. These tissues differ in terms of their voluntary control, nucleation, and structural appearance (striations and branching).
Statement-wise Analysis
- Statement 1 is Incorrect.
Striated muscles, also known as skeletal muscles, are primarily attached to bones and assist in body movement. They are voluntary in nature (controlled by conscious will) and are structurally long, cylindrical, unbranched, and multinucleate (containing many nuclei).
- Statement 2 is Correct.
Smooth muscles are found in the walls of internal hollow organs such as the stomach, intestine, and blood vessels. They are involuntary (not under conscious control). Structurally, they are fusiform (tapered at both ends), non-striated, and uninucleate (single nucleus).
- Statement 3 is Correct.
Cardiac muscles are found exclusively in the heart. They are involuntary in nature. Structurally, cardiac muscle fibers are cylindrical, branched, and typically uninucleate. They also possess intercalated discs which allow for rapid signal transmission.
Key Takeaway
Skeletal muscles are voluntary and multinucleate; Smooth muscles are involuntary and uninucleate; Cardiac muscles are involuntary, branched, and uninucleate.