Study the diagram given below and answer the questions that follow :
Label the parts numbered as .1. and .2..

Explanation

To provide a step-by-step solution to the question, we will assume that the diagram in question is related to the digestive system, as indicated by the chapter title.

### Step-by-Step Solution:

1. **Examine the Diagram**: Begin by closely observing the diagram provided. Identify the parts that are numbered as 1 and 2.

2. **Identify Part 1**: Look for the structure that is labeled as 1. In the context of the digestive system, this part could be the "esophagus," which is the tube that carries food from the mouth to the stomach.

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