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Refer to the characteristics given below...

Refer to the characteristics given below and identify how many are true for a skeletal muscle ?
Uninucleated , branched , dark and light band , actin and myosin filaments , spindle - shaped cells

A

2

B

3

C

4

D

5

Text Solution

AI Generated Solution

The correct Answer is:
To determine how many characteristics are true for skeletal muscle, let's analyze each characteristic provided in the question: 1. **Uninucleated**: Skeletal muscle fibers are actually multinucleated (polynucleated), meaning they contain multiple nuclei per cell. Therefore, this characteristic is **false**. 2. **Branched**: Skeletal muscle fibers are non-branched. They are long, cylindrical, and striated. Thus, this characteristic is also **false**. 3. **Dark and light band**: Skeletal muscle fibers exhibit striations due to the arrangement of actin and myosin filaments, which create dark (A bands) and light (I bands) bands. This characteristic is **true**. 4. **Actin and myosin filaments**: Skeletal muscles contain both actin and myosin filaments, which are essential for muscle contraction. This characteristic is **true**. 5. **Spindle-shaped cells**: Skeletal muscle fibers are not spindle-shaped; they are cylindrical in shape. Hence, this characteristic is **false**. Now, let's summarize the findings: - Uninucleated: **False** - Branched: **False** - Dark and light band: **True** - Actin and myosin filaments: **True** - Spindle-shaped cells: **False** ### Conclusion: Out of the five characteristics listed, **two** are true for skeletal muscle (dark and light bands, actin and myosin filaments). ### Final Answer: **2 characteristics are true for skeletal muscle.** ---
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