Which of the following salivary glands are present at the base of the tongue?

Options

A. parotid glands
B. submaxillary glands
C. infra orbital glands
D. sublingual glands

Answer

To determine which salivary glands are present at the base of the tongue, we can follow these steps:

### Step 1: Identify the Salivary Glands
There are three pairs of major salivary glands in the human body:
- **Parotid glands**: Located in the cheek region.
- **Submaxillary (or Submandibular) glands**: Located in the lower jaw.
- **Sublingual glands**: Located beneath the tongue.

### Step 2: Analyze the Options
Given the options:
a. Parotid glands
b. Submaxillary glands
c. Infraorbital glands
d. Sublingual glands

We need to identify which of these glands is specifically located at the base of the tongue.

### Step 3: Locate the Glands
- **Parotid glands**: Not located at the base of the tongue; they are situated near the cheeks.
- **Submaxillary glands**: While they are close to the jaw, they are not directly at the base of the tongue.
- **Infraorbital glands**: These are not recognized as major salivary glands.
- **Sublingual glands**: These are located directly beneath the tongue, making them the correct answer.

### Step 4: Conclusion
The salivary glands that are present at the base of the tongue are the **sublingual glands**.

### Final Answer
**d. Sublingual glands**

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