Write the missing correlated terms.
Primary reproductive organ ____ :: Accessory gland : Mammary gland.

Explanation

To solve the question, we need to identify the missing correlated term that corresponds to "Primary reproductive organ" in the same way that "Accessory gland" corresponds to "Mammary gland."

### Step-by-Step Solution:

1. **Understanding the Terms**:
- The term "Primary reproductive organ" refers to the main organs involved in reproduction. In humans, these are the organs that produce gametes (sperm and ova).
- The term "Accessory gland" refers to glands that assist in the reproductive process but are not directly involved in gamete production.

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