The types of muscles present in our `:`

Options

A. Heart are involuntary and unstriated smooth muscles
B. Intestine are striated and involuntary
C. Thigh are striated and voluntary
D. Upper arm are smooth muscle fibres fusiform in shape

Answer

To answer the question about the types of muscles present in our body, we need to categorize them based on two criteria: voluntary vs. involuntary and striated vs. unstriated. Here’s a step-by-step breakdown:

### Step 1: Understand the Types of Muscles
Muscles in the human body can be classified into three main types:
1. **Skeletal Muscles**: These are striated and voluntary.
2. **Cardiac Muscles**: These are striated but involuntary.
3. **Smooth Muscles**: These are unstriated and involuntary.

### Step 2: Identify the Characteristics of Each Muscle Type
- **Skeletal Muscles**:
- **Voluntary**: We can control these muscles consciously.
- **Striated**: They have a striped appearance due to the arrangement of muscle fibers.

- **Cardiac Muscles**:
- **Involuntary**: We cannot control these muscles consciously.
- **Striated**: They also have a striped appearance but function automatically to pump blood.

- **Smooth Muscles**:
- **Involuntary**: We cannot control these muscles consciously.
- **Unstriated**: They do not have a striped appearance.

### Step 3: Analyze the Options Given
1. **Heart**: The heart is made of cardiac muscles, which are striated and involuntary. Therefore, the statement that heart muscles are involuntary and unstriated is incorrect.
2. **Intestine**: The muscles in the intestines are smooth muscles, which are involuntary and unstriated. The statement that intestinal muscles are striated and involuntary is incorrect.
3. **Thigh**: Thigh muscles are skeletal muscles, which are striated and voluntary. This statement is correct.
4. **Upper Arm**: The upper arm muscles (like the biceps) are also skeletal muscles, which are striated and voluntary. The statement that upper arm muscles are smooth is incorrect.

### Step 4: Conclusion
Based on the analysis, the correct type of muscle present in the thigh is that they are striated and voluntary.

### Final Answer:
The types of muscles present in our body include:
- **Skeletal Muscles**: Striated and voluntary (e.g., thigh muscles).
- **Cardiac Muscles**: Striated and involuntary (e.g., heart).
- **Smooth Muscles**: Unstriated and involuntary (e.g., intestinal muscles).