Fill in the following black with suitable words :
The alimentary canal together with the associated glands constitutes the _____ system.

Answer

To fill in the blank in the statement "The alimentary canal together with the associated glands constitutes the _____ system," we need to identify the system that includes both the alimentary canal and the associated glands.

### Step-by-Step Solution:

1. **Identify the Components**: The alimentary canal consists of various organs involved in the digestion of food, starting from the mouth and ending at the anus. The associated glands include the salivary glands, liver, and pancreas, which secrete substances that aid in digestion.

2. **Understand the Function**: The primary function of the alimentary canal and its associated glands is to break down food, absorb nutrients, and eliminate waste. This process is essential for providing energy and nutrients to the body.

3. **Determine the System**: Since the alimentary canal and the associated glands work together to process food, they form a specific system in the body that is responsible for digestion.

4. **Fill in the Blank**: The correct term that describes this system is "digestive." Therefore, the complete sentence reads: "The alimentary canal together with the associated glands constitutes the **digestive** system."

### Final Answer:
The alimentary canal together with the associated glands constitutes the **digestive** system.