The heaviest and largest vertebrae are

Options

A. Thoracic
B. Lumber
C. Cervical
D. Sacral

Answer

To determine which vertebrae are the heaviest and largest, we can follow these steps:

### Step 1: Understand the Structure of the Vertebral Column
The vertebral column, also known as the spine, is made up of 33 individual vertebrae that are categorized into different regions: cervical, thoracic, lumbar, sacral, and coccygeal.

**Hint:** Remember that the vertebral column is divided into five main regions based on the location and function of the vertebrae.

### Step 2: Identify the Different Types of Vertebrae
- **Cervical Vertebrae:** These are located in the neck region and are smaller in size.
- **Thoracic Vertebrae:** These are located in the upper and mid-back and are larger than cervical vertebrae but smaller than lumbar vertebrae.
- **Lumbar Vertebrae:** These are located in the lower back and are known for being larger and heavier.
- **Sacral Vertebrae:** These are fused vertebrae that form the sacrum.
- **Coccygeal Vertebrae:** These are the small bones that make up the tailbone.

**Hint:** Compare the size and weight of the vertebrae in each region to identify which one is the largest and heaviest.

### Step 3: Analyze the Lumbar Vertebrae
The lumbar vertebrae are specifically located in the lower back region. There are five lumbar vertebrae (L1 to L5), and they are designed to bear a significant amount of weight and provide support for the upper body.

**Hint:** Focus on the function of the lumbar vertebrae, which is to support the weight of the body and allow for movement.

### Step 4: Conclusion
Based on the information gathered, the lumbar vertebrae are the heaviest and largest vertebrae in the human body.

**Final Answer:** The heaviest and largest vertebrae are the **lumbar vertebrae**.

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