Mammillary bodies protrude from which region?

Mammillary bodies protrude from which region?

• A. Hypothalamus
• B. Cerebellum
• C. Thalamus
• D. Limbic system

Answer: (A)

Mammillary bodies are small paired nuclei located on the undersurface of the brain, at the posterior end of the hypothalamus. They protrude from the hypothalamus, which is the region they are anatomically part of. Functionally they’re tied to the limbic system’s memory circuits (fornix to the hippocampus and the mammillothalamic tract to the anterior thalamus, forming part of the Papez circuit). They’re not components of the cerebellum or the thalamus, and while they contribute to limbic function, their anatomical origin is the hypothalamus.

Mammillary bodies are small paired nuclei located on the undersurface of the brain, at the posterior end of the hypothalamus. They protrude from the hypothalamus, which is the region they are anatomically part of. Functionally they’re tied to the limbic system’s memory circuits (fornix to the hippocampus and the mammillothalamic tract to the anterior thalamus, forming part of the Papez circuit). They’re not components of the cerebellum or the thalamus, and while they contribute to limbic function, their anatomical origin is the hypothalamus.