Thalam- refers to which anatomical concept?

• A. Brain
• B. Outer Chamber
• C. Inner Chamber
• D. Vessel

Answer: (C)

Thalam- denotes an inner chamber. This root comes from a word meaning inner room or chamber, and in anatomy it points to structures nestled near the brain’s internal spaces. The thalamus is a deep, central brain structure close to the third ventricle and acts as a relay hub for sensory information, reflecting that “inner chamber” sense. It’s not a vessel or an outer chamber, so thalam- is best understood as referring to an inner, central region rather than the outer surface or a blood vessel.