Match the column-I with column-II List 1 Smooth muscle Tropomyosin Red muscle Skull List 2 Myoglobin Thin filament Sutures Involuntary

Answer

To solve the matching question, we need to pair each item from Column-I with the correct item from Column-II based on their characteristics. Let's go through each item step by step.

### Step-by-Step Solution:

1. **Smooth Muscle**:
- Smooth muscles are non-striated, involuntary muscles found in the walls of visceral organs.
- They cannot be consciously controlled.
- **Match**: Smooth Muscle → Involuntary

2. **Tropomyosin**:
- Tropomyosin is a protein that is part of the thin filament in muscle fibers.
- It plays a role in muscle contraction by regulating the interaction between actin and myosin.
- **Match**: Tropomyosin → Thin Filament

3. **Red Muscle**:
- Red muscles, also known as slow-twitch muscles, are rich in myoglobin, which gives them their red color.
- They are adapted for endurance and are capable of sustained contractions.
- **Match**: Red Muscle → Myoglobin

4. **Skull**:
- The skull is a bony structure that protects the brain.
- The bones of the skull are joined together by sutures, which are immovable joints.
- **Match**: Skull → Sutures

### Final Matching:
- Smooth Muscle → Involuntary
- Tropomyosin → Thin Filament
- Red Muscle → Myoglobin
- Skull → Sutures