Where are deltoid ridge and odontoid process located ?

Explanation

### Step-by-Step Solution:

1. **Identify the Deltoid Ridge**:
- The deltoid ridge is a rough, triangular area found on the front surface of the humerus bone. It is specifically located on the shaft of the humerus.

2. **Identify the Odontoid Process**:
- The odontoid process, also known as the dens, is a protuberance found on the axis vertebra (the second cervical vertebra). It is located on the centrum of the axis vertebra.

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