Number of canines in upper half jaw is

Options

A. 4
B. 3
C. 2
D. 1

Answer

To solve the question regarding the number of canines in the upper half jaw, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of Human Teeth**:
- Human teeth are categorized into four types: incisors, canines, premolars, and molars. Each type serves a different function in the process of digestion.

2. **Know the Dental Formula**:
- The dental formula for a normal adult human is represented as:
- 2-1-2-3 for each quadrant of the mouth.
- This means:
- 2 incisors
- 1 canine
- 2 premolars
- 3 molars

3. **Identify the Upper Half Jaw**:
- The upper half jaw refers to the maxilla, which contains the upper teeth. Each quadrant of the upper jaw will have the same arrangement of teeth as per the dental formula.

4. **Count the Canines**:
- According to the dental formula, there is 1 canine in each quadrant of the upper jaw. Since the upper jaw consists of two quadrants, we multiply the number of canines by 2.
- Therefore, the total number of canines in the upper half jaw is 1 (per quadrant) x 2 (quadrants) = 2.

5. **Conclusion**:
- The number of canines in the upper half jaw is 2.

### Final Answer:
The number of canines in the upper half jaw is **2**.

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