Hypothalamus contains several groups of neurosecretory cells which produce hormones. These are called

Options

A. Ganglia
B. Nuclei
C. Tract
D. Neuroglia

Explanation

To answer the question regarding the groups of neurosecretory cells in the hypothalamus that produce hormones, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Hypothalamus**: The hypothalamus is a crucial part of the brain that plays a significant role in hormone production and regulation. It contains several groups of specialized cells known as neurosecretory cells.

2. **Identifying Neurosecretory Cells**: Neurosecretory cells are specialized neurons that produce and secrete hormones. In the hypothalamus, these cells are responsible for synthesizing hormones that are released into the bloodstream.

3. **Recognizing the Types of Neurosecretory Cells**: The neurosecretory cells in the hypothalamus include those located in specific areas such as the supraoptic nucleus and the paraventricular nucleus. These cells are involved in the production of hormones like oxytocin and vasopressin (antidiuretic hormone).

4. **Defining the Term**: The hormones produced by these neurosecretory cells are often referred to as neurohormones. These neurohormones are released into the blood and have various physiological effects on the body.

5. **Choosing the Correct Option**: Among the options provided:
- **Ganglia** refers to clusters of nerve cell bodies, not hormones.
- **Nuclei** refers to the specific areas in the hypothalamus where neurosecretory cells are located and is closely related to the function of these cells.
- **Trach** is not a relevant term in this context.
- **Neuroglia** refers to supportive cells in the nervous system, not hormone-producing cells.

The best choice that relates to the neurosecretory cells of the hypothalamus is **nuclei**, as it directly pertains to the location of these hormone-producing cells.

### Final Answer:
The groups of neurosecretory cells in the hypothalamus that produce hormones are called **nuclei**.

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