In human being, the palatine rugae line

Options

A. hard palate and seft palate
B. hard palate only
C. soft palate only
D. neither hard palate nor soft palate

Answer

### Step-by-Step Solution:

1. **Understanding the Term "Palatine Rugae":**
- The term "palatine rugae" refers to the series of ridges or folds located on the hard palate of the mouth.

2. **Identifying the Location:**
- The hard palate is the bony structure that forms the roof of the mouth. It separates the oral cavity from the nasal cavity. The palatine rugae are specifically found on the anterior part of the hard palate.

3. **Function of the Palatine Rugae:**
- The palatine rugae serve several functions, including aiding in the process of chewing and helping to facilitate the movement of food towards the throat. They also play a role in speech.

4. **Structure of the Palate:**
- The palate is divided into two parts: the hard palate (anterior) and the soft palate (posterior). The hard palate is bony and features the palatine rugae, while the soft palate is muscular and located towards the back of the mouth.

5. **Conclusion:**
- In summary, the palatine rugae line the hard palate in human beings, which is crucial for both the digestive and respiratory systems.