Which structure directs intentional movements and is also called the corpus striatum?

• A. Basal ganglia
• B. Hypothalamus
• C. Amygdala
• D. Hippocampus

Answer: (A)

Movement initiation and coordination are governed by the basal ganglia, a network that helps start and fine-tune voluntary motor actions. The corpus striatum refers to the striatal portion of the basal ganglia, made up of the caudate nucleus and putamen, which receive motor plans from the cortex and influence downstream motor circuits to promote the intended movement. Through connections with the globus pallidus and thalamus, the striatum biases action selection, enabling purposeful movements while suppressing competing ones. That’s why this structure is associated with directing intentional movements. The hypothalamus regulates autonomic and endocrine functions, the amygdala processes emotion, and the hippocampus handles memory, none of which directly drive voluntary movement like the basal ganglia does.