An anteriorly convex curve is seen in which region of the vertebral column ?

Options

A. Thoracic
B. Lumbar
C. Sacral
D. Both (A) and ( C )

Answer

To determine the region of the vertebral column that exhibits an anteriorly convex curve, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of the Vertebral Column**:
- The vertebral column is made up of 26 vertebrae, which are categorized into different regions: cervical, thoracic, lumbar, sacral, and coccygeal.

2. **Identify the Types of Curves**:
- The vertebral column has different types of curves:
- **Cervical Curve**: Convex anteriorly (secondary curve)
- **Thoracic Curve**: Concave anteriorly (primary curve)
- **Lumbar Curve**: Convex anteriorly (secondary curve)
- **Sacral Curve**: Concave anteriorly (primary curve)

3. **Focus on Anteriorly Convex Curves**:
- The question specifically asks for an anteriorly convex curve.
- The lumbar region is known for having a convex curve that protrudes outward, which is referred to as the lordotic curve.

4. **Evaluate the Options**:
- Option 1: Thoracic - Concave anteriorly (not correct)
- Option 2: Lumbar - Convex anteriorly (correct)
- Option 3: Sacral - Concave anteriorly (not correct)
- Option 4: Both A and C - Incorrect as both are not anteriorly convex.

5. **Conclusion**:
- The correct answer is **Option 2: Lumbar**, as this region of the vertebral column exhibits an anteriorly convex curve.