Diagram of the human brain highlighting key regions such as the cerebrum, cerebellum, and brainstem.

Let’s solve this step by step.

We are looking at a diagram of the human brain with three labeled arrows: 1, 2, and 3. We need to identify which parts of the brain these arrows point to.

First, let’s look at arrow 1 — it points to the large, wrinkled outer part of the brain that covers most of the top and sides. This is the cerebrum, specifically the cerebral cortex. It’s responsible for thinking, memory, and voluntary actions.

Next, arrow 2 points to the back-bottom part of the brain, behind the brainstem. This area has many fine folds and looks like a little “tree” inside (called the arbor vitae). That’s the cerebellum. It helps with balance, coordination, and fine motor control.

Arrow 3 points to the lower part of the brainstem, just above where the spinal cord would connect. The label near it says “p.” which likely stands for pons, but the arrow is pointing more broadly to the brainstem region including the medulla oblongata (“m.o.”) and pons. However, since the arrow is aimed at the bulge just above the medulla, and given common labeling in such diagrams, this is typically the pons — part of the brainstem that relays signals between the cerebrum, cerebellum, and spinal cord.

But wait — let’s double-check standard brain anatomy labels:

- Arrow 1 → Cerebrum (correct)
- Arrow 2 → Cerebellum (correct)
- Arrow 3 → Points to the pons (the rounded bump on the brainstem, above the medulla)

In many textbooks, when you see an arrow pointing to that specific bulge on the brainstem, it’s labeled as the pons.

So final identification:

1 → Cerebrum
2 → Cerebellum
3 → Pons

Final Answer:
1 - Cerebrum, 2 - Cerebellum, 3 - Pons