Anatomy of a female frog showing internal organs including the small intestine, spleen, and mesentery.

Let's solve the task step by step.

Task:

Label the structures on the diagram using the provided terms:
- small intestine
- spleen
- mesentery

---

Step 1: Understand the Description

From the text:

- The small intestine is coiled and held together by a thin membrane called the mesentery, which contains blood vessels.
- The spleen is described as a reddish sphere embedded in the coils of the small intestine. It filters blood and replaces worn-out blood cells.
- The mesentery is the thin membrane that holds the small intestine in place.

Also, we are told:
- The presence of eggs (visible at the bottom) indicates this is a female frog.

---

Step 2: Analyze the Diagram

Look at the image:

1. Yellow arrow pointing to a reddish oval structure → This matches the description of the spleen ("reddish sphere").
2. Blue arrows pointing to the coiled, translucent tissue → This is the small intestine, which is coiled and held by the mesentery.
3. The thin membrane surrounding the small intestine → This is the mesentery.
4. Orange arrow points to eggs → Not part of the labeling task, but confirms it's a female.

---

Step 3: Match Labels to Arrows

Now assign each label to the correct arrow:

- Yellow arrow (pointing to the dark reddish organ) → Spleen
- Blue arrows (pointing to the coiled intestinal tissue) → Small intestine
- The thin membrane holding the intestine (between blue arrows or near them) → Mesentery

Note: The mesentery is not directly pointed to by an arrow, but it’s the translucent web-like membrane supporting the small intestine. You may need to label it where it connects the intestine to the body wall.

---

✔ Final Answer: Labeling

- Yellow arrow: Spleen
- Blue arrows: Small intestine
- Translucent membrane (near the blue arrows): Mesentery

> 💡 Tip: If you're drawing labels on the diagram, place:
> - "Spleen" next to the yellow arrow
> - "Small intestine" near the blue arrows
> - "Mesentery" near the thin membrane connecting the intestines to the body wall

---

✔ Summary

| Arrow Color | Structure Labeled |
|-------------|-------------------|
| Yellow | Spleen |
| Blue | Small intestine |
| (Membrane) | Mesentery |

This completes the labeling task based on anatomical features and descriptions.