Final answer:
The structures that are part of the forebrain are the limbic system and the reticular formation.
Step-by-step explanation:
The structures that are part of the forebrain include the limbic system and the reticular formation.
- Limbic system: The limbic system is a connected set of structures that regulates emotion, fear, motivation, and memory formation. It includes the amygdala, hippocampus, cingulate gyrus, and connects to the thalamus and hypothalamus.
- Reticular formation: The reticular formation is located in the midbrain and plays a role in sleep, arousal, and attention.
Therefore, both the limbic system and the reticular formation are part of the forebrain.