State the function of infundibulum.

Explanation

### Step-by-Step Solution:

1. **Definition of Infundibulum**: The term "infundibulum" refers to any funnel-shaped structure in the body. It is an anatomical term that can apply to various organs.

2. **Infundibulum in the Brain**: In the brain, the infundibulum is a hollow stalk that connects the hypothalamus to the posterior pituitary gland. This structure plays a crucial role in the endocrine system.

3. **Hormone Production**: The infundibulum, along with the posterior lobe of the pituitary gland, is responsible for producing important hormones such as oxytocin and vasopressin. These hormones are essential for various bodily functions, including water retention and childbirth.

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