Other than the cerebrum, the cerebellum, the thalamus and the brainstem, what else is the brain made up of?

A region of the brain called the hypothalamus has a lot of tiny nuclei that serve a range of purposes. The pituitary gland's role in connecting the neurological system to the endocrine system is one of the hypothalamus' most significant tasks. The limbic system includes the hypothalamus, which is situated beneath the thalamus. It is referred to as the ventral portion of the diencephalon in terms of neuroanatomy. Hypothalamus is a part of every vertebrate's brain. It is the size of an almond in humans.