Question

Which of the following brain structure is not considered to be part of limbic system?

• A. Amygdala
• B. Hippocampus
• C. Corpora quadrigemina
• D. Septal nuclei

Answer 1

Answer: (C)

Corpora quadrigemina

• The limbic system is the portion of the brain that deals with three key functions: emotions, memories, and arousal (or stimulation).
• The components of the limbic system include Amygdala, Hippocampus, Septal nuclei, thalamus, hypothalamus, basal ganglia.
• The posterior surface of the adult midbrain is characterized by four elevations collectively called the corpora quadrigemina. It is not a part of the limbic system.
  
• Hence the brain structure is not considered to be part of the limbic is Corpora quadrigemina.
• So, the correct answer is 'Corpora quadrigemina'.